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

Office briefing

UNION DE TULA — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · UNION DE TULA / JALISCO · municipal · Municipal governmentMX-M-14-111

Read the complete original research briefing

INE result distributions kept separate. Certified seats, supplementary elections, coalition and boundary audit remain.

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

Geography
UNION DE TULA / JALISCO
Next election
2027-06-06
Linked upcoming event
next-7fc6de3a18a36219c0428b30
Registry qualification
Unknown

2. How certain is that date?

2027-06-06 is expected (not formally called). Day precision. A date without a formal call is not confirmed.

3. Who won earlier selected elections?

2024

Special · Legal certification not established · candidate marks

  • PVEM_PT_MORENA_HAGAMOS_FUTURO42.5%
  • MC34.1%
  • PAN_PRI_PRD20.4%
Results for event-01d21b01fec61d8826f12724
Label / candidateParty codeVotesShareSeatsStatus
PVEM_PT_MORENA_HAGAMOS_FUTUROmexico/Sd17b5d42d1/20242,94242.5%UnknownRecorded
MCmexico/Sd17b5d42d1/20242,36234.1%UnknownRecorded
PAN_PRI_PRDmexico/Sd17b5d42d1/20241,41420.4%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • MC41.2%
  • PRI31.1%
  • MORENA23.0%
  • HAGAMOS1.7%
  • FUTURO0.9%
  • PES0.4%
  • FM0.3%
Results for event-fdec6d9f1aa0156eca231565
Label / candidateParty codeVotesShareSeatsStatus
MCmexico/Sf8e6f513e4/20212,25541.2%UnknownRecorded
PRImexico/Sf8e6f513e4/20211,70331.1%UnknownRecorded
MORENAmexico/Sf8e6f513e4/20211,26123%UnknownRecorded
HAGAMOSmexico/Sf8e6f513e4/2021931.7%UnknownRecorded
FUTUROmexico/Sf8e6f513e4/2021510.9%UnknownRecorded
PESmexico/Sf8e6f513e4/2021240.4%UnknownRecorded
FMmexico/Sf8e6f513e4/2021140.3%UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • PAN_PRD_MC51.8%
  • PRI37.8%
  • PT_MORENA_ES5.7%
  • PANAL0.5%
  • PVEM0.4%
Results for event-9ff4305db9639d4b0c45cb3b
Label / candidateParty codeVotesShareSeatsStatus
PAN_PRD_MCmexico/S38610daafb/20183,67751.8%UnknownRecorded
PRImexico/S38610daafb/20182,68637.8%UnknownRecorded
PT_MORENA_ESmexico/S38610daafb/20184075.7%UnknownRecorded
PANALmexico/S38610daafb/2018330.5%UnknownRecorded
PVEMmexico/S38610daafb/2018300.4%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

51.520–100 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=8.633521881512351, oldest_gap=14.503146494950968, previous_gap=10.220329568598409

pedersen volatility

Provisional volatility

61.47percentage points

Grouped Pedersen lower bound (percentage points). Seven exact standalone INE party labels. Joint coalition combinations, independents and other parties remain Other, without allocating coalition votes. This coarse grouped comparison can conceal coalition-member shifts and requires the stated geographic/event review. 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=["PAN","PRI","PRD","PT","PVEM","MC","MORENA","Other"], interval=Latest interval, vectors=[[0,0,0,0,0,35.15927359333135,0,64.84072640666865],[0,31.531197926309943,0,0,0,41.75152749490835,23.34752823551194,3.3697463432697647],[0,39.3092345968096,0,0,0.4390458071125421,0,0,60.251719596077855]]

pedersen volatility

Provisional volatility

65.1percentage points

Grouped Pedersen lower bound (percentage points). Seven exact standalone INE party labels. Joint coalition combinations, independents and other parties remain Other, without allocating coalition votes. This coarse grouped comparison can conceal coalition-member shifts and requires the stated geographic/event review. 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

Method pedersen.grouped.v1. Inputs: groups=["PAN","PRI","PRD","PT","PVEM","MC","MORENA","Other"], interval=Previous interval, vectors=[[0,0,0,0,0,35.15927359333135,0,64.84072640666865],[0,31.531197926309943,0,0,0,41.75152749490835,23.34752823551194,3.3697463432697647],[0,39.3092345968096,0,0,0.4390458071125421,0,0,60.251719596077855]]

pedersen volatility

Provisional volatility

63.29percentage points

Grouped Pedersen lower bound (percentage points). Seven exact standalone INE party labels. Joint coalition combinations, independents and other parties remain Other, without allocating coalition votes. This coarse grouped comparison can conceal coalition-member shifts and requires the stated geographic/event review. 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

Method pedersen.grouped.v1. Inputs: groups=["PAN","PRI","PRD","PT","PVEM","MC","MORENA","Other"], interval=Both intervals mean, vectors=[[0,0,0,0,0,35.15927359333135,0,64.84072640666865],[0,31.531197926309943,0,0,0,41.75152749490835,23.34752823551194,3.3697463432697647],[0,39.3092345968096,0,0,0.4390458071125421,0,0,60.251719596077855]]

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.

7. Unresolved issues and sources

No open research issues attached to this office.

Sources

Cite this record

Center for Digital Democracy. “UNION DE TULA — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-14-111. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--Sd17b5d42d1, mexico--Sf8e6f513e4, mexico--S38610daafb.