Skip to observatory content

Partial researchResearch snapshot 2026-09-13. Evidence gaps remain; see Coverage for requirements.

Office briefing

Amazonas — State legislative assembly

Tracked current office. Identifiers stay separate from display names.

Brazil · Amazonas / AM · regional · State legislative assemblyBR-AM-A

Read the complete original research briefing

First round 4 October 2026; governor runoff 25 October where required. TSE ordinary-election returns aggregated once from state files, excluding the duplicate national BR file. Party votes are not governing coalition control. Legislative votes include nominal plus valid list votes. Judicial retotalizations and changed party labels require review. The 2014 file uses legacy nominal/list fields; later files separately identify valid, converted and subjudice votes. This is an explicit definition-comparability limitation.

1. What office, where, and when is the next election?

Geography
Amazonas / AM
Next election
2026-10-04
Linked upcoming event
next-781d8394fe07a290eea3f2bc
Registry qualification
Unknown

2. How certain is that date?

2026-10-04 is expected (not formally called). Day precision. A date without a formal call is not confirmed.

3. Who won earlier selected elections?

2022-10-02

unknown · Legal certification not established · list votes

  • UNIÃO20.2%
  • AVANTE12.9%
  • PSC10.1%
  • PL9.3%
  • REPUBLICANOS8.2%
  • MDB5.7%
  • PATRIOTA5.6%
  • PMB4.3%
  • PT3.8%
  • PV3.3%
  • PSB3.2%
  • PMN3.0%
  • CIDADANIA2.1%
  • PSDB1.8%
  • SOLIDARIEDADE1.7%
  • DC1.3%
  • PC do B1.1%
  • PDT1.0%
  • PROS0.8%
  • PSOL0.2%
  • PTB0.2%
  • AGIR0.1%
  • REDE0.1%
Results for event-7a36535232238b09322d880e
Label / candidateParty codeVotesShareSeatsStatus
UNIÃObrazil/S5cd0a4c40e/2022397,54020.2%6Recorded
AVANTEbrazil/S5cd0a4c40e/2022253,98012.9%4Recorded
PSCbrazil/S5cd0a4c40e/2022199,00510.1%3Recorded
PLbrazil/S5cd0a4c40e/2022183,1869.3%3Recorded
REPUBLICANOSbrazil/S5cd0a4c40e/2022161,5128.2%2Recorded
MDBbrazil/S5cd0a4c40e/2022111,3115.7%1Recorded
PATRIOTAbrazil/S5cd0a4c40e/2022110,8715.6%1Recorded
PMBbrazil/S5cd0a4c40e/202284,2644.3%1Recorded
PTbrazil/S5cd0a4c40e/202274,4733.8%1Recorded
PVbrazil/S5cd0a4c40e/202264,0013.3%1Recorded
PSBbrazil/S5cd0a4c40e/202263,8883.2%0 (recorded zero)Recorded
PMNbrazil/S5cd0a4c40e/202258,2423%0 (recorded zero)Recorded
CIDADANIAbrazil/S5cd0a4c40e/202241,1452.1%1Recorded
PSDBbrazil/S5cd0a4c40e/202235,8061.8%0 (recorded zero)Recorded
SOLIDARIEDADEbrazil/S5cd0a4c40e/202234,1401.7%0 (recorded zero)Recorded
DCbrazil/S5cd0a4c40e/202225,1291.3%0 (recorded zero)Recorded
PC do Bbrazil/S5cd0a4c40e/202221,7531.1%0 (recorded zero)Recorded
PDTbrazil/S5cd0a4c40e/202220,4791%0 (recorded zero)Recorded
PROSbrazil/S5cd0a4c40e/202215,9750.8%0 (recorded zero)Recorded
PSOLbrazil/S5cd0a4c40e/20223,9950.2%0 (recorded zero)Recorded
PTBbrazil/S5cd0a4c40e/20223,7170.2%0 (recorded zero)Recorded
AGIRbrazil/S5cd0a4c40e/20222,6880.1%0 (recorded zero)Recorded
REDEbrazil/S5cd0a4c40e/20221,0090.1%0 (recorded zero)Recorded

2018-10-07

unknown · Legal certification not established · list votes

  • PV10.3%
  • PP9.4%
  • PSD9.0%
  • PHS6.7%
  • PR6.0%
  • PPS5.9%
  • PSB4.6%
  • PODE4.6%
  • PSL4.0%
  • PT4.0%
  • PSDB3.9%
  • AVANTE3.8%
  • PRB3.7%
  • MDB3.1%
  • SOLIDARIEDADE3.0%
  • PDT2.8%
  • PMN2.6%
  • DEM2.3%
  • DC1.7%
  • PC do B1.4%
  • PRP1.2%
  • PATRI1.2%
  • REDE1.0%
  • PTC1.0%
  • PTB0.8%
  • PSC0.7%
  • PSOL0.7%
  • PROS0.4%
  • PRTB0.2%
  • PMB0.1%
  • PPL0.1%
  • PSTU0.1%
Results for event-326ea923b72c6213368e035c
Label / candidateParty codeVotesShareSeatsStatus
PVbrazil/S0d7ac4a666/2018184,09310.3%3Recorded
PPbrazil/S0d7ac4a666/2018168,2629.4%4Recorded
PSDbrazil/S0d7ac4a666/2018160,1259%2Recorded
PHSbrazil/S0d7ac4a666/2018119,5626.7%2Recorded
PRbrazil/S0d7ac4a666/2018107,6716%2Recorded
PPSbrazil/S0d7ac4a666/2018105,1355.9%1Recorded
PSBbrazil/S0d7ac4a666/201881,8844.6%1Recorded
PODEbrazil/S0d7ac4a666/201881,4724.6%1Recorded
PSLbrazil/S0d7ac4a666/201871,2044%1Recorded
PTbrazil/S0d7ac4a666/201870,8084%1Recorded
PSDBbrazil/S0d7ac4a666/201868,9783.9%1Recorded
AVANTEbrazil/S0d7ac4a666/201868,2843.8%0 (recorded zero)Recorded
PRBbrazil/S0d7ac4a666/201866,6443.7%1Recorded
MDBbrazil/S0d7ac4a666/201855,1893.1%1Recorded
SOLIDARIEDADEbrazil/S0d7ac4a666/201852,8603%0 (recorded zero)Recorded
PDTbrazil/S0d7ac4a666/201850,2432.8%1Recorded
PMNbrazil/S0d7ac4a666/201846,4762.6%0 (recorded zero)Recorded
DEMbrazil/S0d7ac4a666/201841,7052.3%1Recorded
DCbrazil/S0d7ac4a666/201830,0091.7%0 (recorded zero)Recorded
PC do Bbrazil/S0d7ac4a666/201824,5201.4%0 (recorded zero)Recorded
PRPbrazil/S0d7ac4a666/201822,3501.2%1Recorded
PATRIbrazil/S0d7ac4a666/201821,2921.2%0 (recorded zero)Recorded
REDEbrazil/S0d7ac4a666/201818,7081%0 (recorded zero)Recorded
PTCbrazil/S0d7ac4a666/201817,6841%0 (recorded zero)Recorded
PTBbrazil/S0d7ac4a666/201814,2990.8%0 (recorded zero)Recorded
PSCbrazil/S0d7ac4a666/201812,1370.7%0 (recorded zero)Recorded
PSOLbrazil/S0d7ac4a666/201812,0700.7%0 (recorded zero)Recorded
PROSbrazil/S0d7ac4a666/20187,5990.4%0 (recorded zero)Recorded
PRTBbrazil/S0d7ac4a666/20183,7700.2%0 (recorded zero)Recorded
PMBbrazil/S0d7ac4a666/20181,5320.1%0 (recorded zero)Recorded
PPLbrazil/S0d7ac4a666/20181,4040.1%0 (recorded zero)Recorded
PSTUbrazil/S0d7ac4a666/20181,1080.1%0 (recorded zero)Recorded

2014-10-05

unknown · Legal certification not established · list votes

  • PSD11.8%
  • PTN9.2%
  • PMDB8.4%
  • PSDB7.1%
  • PT6.2%
  • PP6.0%
  • PSB5.2%
  • PC do B4.7%
  • DEM4.6%
  • PROS4.5%
  • PV4.5%
  • PPS3.8%
  • PDT3.6%
  • PR3.4%
  • PTB2.5%
  • PSDC2.0%
  • PSL2.0%
  • SD1.8%
  • PRB1.7%
  • PHS1.6%
  • PSC1.3%
  • PPL1.0%
  • PEN0.8%
  • PTC0.7%
  • PSOL0.6%
  • PMN0.4%
  • PRP0.2%
  • PT do B0.1%
  • PSTU0.1%
  • PCB0.1%
  • PRTB0.0%
Results for event-725d868f7dc86ee87d5b9045
Label / candidateParty codeVotesShareSeatsStatus
PSDbrazil/S2c70216745/2014195,55911.8%3Recorded
PTNbrazil/S2c70216745/2014153,3219.2%2Recorded
PMDBbrazil/S2c70216745/2014138,6248.4%3Recorded
PSDBbrazil/S2c70216745/2014118,4407.1%2Recorded
PTbrazil/S2c70216745/2014102,9496.2%2Recorded
PPbrazil/S2c70216745/201499,4076%1Recorded
PSBbrazil/S2c70216745/201486,5915.2%1Recorded
PC do Bbrazil/S2c70216745/201478,4084.7%1Recorded
DEMbrazil/S2c70216745/201475,7994.6%1Recorded
PROSbrazil/S2c70216745/201474,4244.5%1Recorded
PVbrazil/S2c70216745/201474,2644.5%1Recorded
PPSbrazil/S2c70216745/201462,2133.8%1Recorded
PDTbrazil/S2c70216745/201459,3813.6%1Recorded
PRbrazil/S2c70216745/201456,6573.4%2Recorded
PTBbrazil/S2c70216745/201440,9202.5%0 (recorded zero)Recorded
PSDCbrazil/S2c70216745/201433,9792%0 (recorded zero)Recorded
PSLbrazil/S2c70216745/201433,2352%0 (recorded zero)Recorded
SDbrazil/S2c70216745/201430,4071.8%0 (recorded zero)Recorded
PRBbrazil/S2c70216745/201428,7131.7%1Recorded
PHSbrazil/S2c70216745/201426,5651.6%0 (recorded zero)Recorded
PSCbrazil/S2c70216745/201421,3581.3%1Recorded
PPLbrazil/S2c70216745/201415,8691%0 (recorded zero)Recorded
PENbrazil/S2c70216745/201413,5210.8%0 (recorded zero)Recorded
PTCbrazil/S2c70216745/201411,4910.7%0 (recorded zero)Recorded
PSOLbrazil/S2c70216745/201410,3480.6%0 (recorded zero)Recorded
PMNbrazil/S2c70216745/20146,6190.4%0 (recorded zero)Recorded
PRPbrazil/S2c70216745/20143,9340.2%0 (recorded zero)Recorded
PT do Bbrazil/S2c70216745/20142,1430.1%0 (recorded zero)Recorded
PSTUbrazil/S2c70216745/20141,8280.1%0 (recorded zero)Recorded
PCBbrazil/S2c70216745/20141,0460.1%0 (recorded zero)Recorded
PRTBbrazil/S2c70216745/20147570%0 (recorded zero)Recorded

4. Competition and volatility

competition index

Provisional imported-series CI

75.520–100 historical closeness

Actual-event and/or comparability review incomplete

Comparison status: Provisional imported-series comparison; actual-event review open

Method ci.weighted-gap.v1. Inputs: latest_gap=7.294311443116207, oldest_gap=2.5463445806229927, previous_gap=0.8848696842002894

pedersen volatility

Provisional volatility

24.14percentage points

Grouped Pedersen lower bound (percentage points). Nine continuing national parties, allowing PMDB/MDB and PR/PL labels; merged, new and remaining parties all grouped in Other. Lower bound; changes inside Other are invisible. An interval is withheld if either election has no list mapped to an explicit named group. This is aggregate share change, not individual voter switching. Event review: Actual-event and/or comparability review incomplete

Comparison status: Latest interval

Method pedersen.grouped.v1. Inputs: groups=["PT","PSDB","MDB","PP","PSB","PDT","PSD","PSOL","PL","Other"], interval=Latest interval, vectors=[[3.783987573858968,1.8193098044874547,5.655733498500337,0,3.246161670923714,1.0405419618527225,0,0.20298672482062732,9.307716188483463,74.94356257707271],[3.957794997085089,3.855507616497222,3.0847749985048156,9.404961329221717,4.576885175987394,2.8083195972001205,8.950145801438396,0.6746495539319995,6.018242926380474,56.66871800375278],null]

pedersen volatility

Withheld volatility

Unknownpercentage points

Grouped Pedersen lower bound (percentage points). Nine continuing national parties, allowing PMDB/MDB and PR/PL labels; merged, new and remaining parties all grouped in Other. Lower bound; changes inside Other are invisible. An interval is withheld if either election has no list mapped to an explicit named group. This is aggregate share change, not individual voter switching. Event review: Actual-event and/or comparability review incomplete

Comparison status: Previous interval · Comparable grouped vectors unavailable for this interval

Method pedersen.grouped.v1. Inputs: groups=["PT","PSDB","MDB","PP","PSB","PDT","PSD","PSOL","PL","Other"], interval=Previous interval, vectors=[[3.783987573858968,1.8193098044874547,5.655733498500337,0,3.246161670923714,1.0405419618527225,0,0.20298672482062732,9.307716188483463,74.94356257707271],[3.957794997085089,3.855507616497222,3.0847749985048156,9.404961329221717,4.576885175987394,2.8083195972001205,8.950145801438396,0.6746495539319995,6.018242926380474,56.66871800375278],null]

pedersen volatility

Withheld volatility

Unknownpercentage points

Grouped Pedersen lower bound (percentage points). Nine continuing national parties, allowing PMDB/MDB and PR/PL labels; merged, new and remaining parties all grouped in Other. Lower bound; changes inside Other are invisible. An interval is withheld if either election has no list mapped to an explicit named group. This is aggregate share change, not individual voter switching. Event review: Actual-event and/or comparability review incomplete

Comparison status: Both intervals mean · Comparable grouped vectors unavailable for this interval

Method pedersen.grouped.v1. Inputs: groups=["PT","PSDB","MDB","PP","PSB","PDT","PSD","PSOL","PL","Other"], interval=Both intervals mean, vectors=[[3.783987573858968,1.8193098044874547,5.655733498500337,0,3.246161670923714,1.0405419618527225,0,0.20298672482062732,9.307716188483463,74.94356257707271],[3.957794997085089,3.855507616497222,3.0847749985048156,9.404961329221717,4.576885175987394,2.8083195972001205,8.950145801438396,0.6746495539319995,6.018242926380474,56.66871800375278],null]

Source-reported control: Unverified. Current tenure requires separate dated evidence.

5. Officeholder evidence

Dated roster observations are not automatically current tenure. The source current-office flag means this office is tracked now, not that the last winner still holds it.

No officeholder observation supplied.

6. Polling context

No local poll supplied.

National context is listed on the polling page. It is not a local forecast.

7. Unresolved issues and sources

First round 4 October 2026; governor runoff 25 October where required. TSE ordinary-election returns aggregated once from state files, excluding the duplicate national BR file. Party votes are not governing coalition control. Legislative votes include nominal plus valid list votes. Judicial retotalizations and changed party labels require review. The 2014 file uses legacy nominal/list fields; later files separately identify valid, converted and subjudice votes. This is an explicit definition-comparability limitation. Roraima legal certification, Rio and other specific replacement/current-control cases remain open. Eight municipal replacement tickets are tracked; ordinary municipal renewals are outside the window. Public-vote baselines for Alagoas and Amazonas are supplied separately from their indirect selections. Roraima’s primary 2010 cycle is recovered; the June 2026 proclamation is still unresolved. Rio’s signed 2026 legislative retotalization verifies the imported 2022 votes and seats, with 70 named elected deputies added; later membership and governing-coalition control still need dated verification.

    Sources

    Cite this record

    Center for Digital Democracy. “Amazonas — State legislative assembly.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/BR-AM-A. Sources: brazil--url-580aebec6bb5c27e76b98bb4, brazil--url-ef95aa16df1e62f699a27949, brazil--url-653ade48bf64a7388c4b910b, brazil--S5cd0a4c40e, brazil--S0d7ac4a666, brazil--S2c70216745.