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

Office briefing

TONANITLA — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · TONANITLA / MEXICO · municipal · Municipal governmentMX-M-15-125

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
TONANITLA / MEXICO
Next election
2027-06-06
Linked upcoming event
next-10e6b5773e1e75da0084007e
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_MORENA47.3%
  • PAN_PRI_PRD_NAEM30.1%
  • MC18.4%
Results for event-eb10d2575abdacb61a92af51
Label / candidateParty codeVotesShareSeatsStatus
PVEM_PT_MORENAmexico/S167505a015/20243,46247.3%UnknownRecorded
PAN_PRI_PRD_NAEMmexico/S167505a015/20242,20130.1%UnknownRecorded
MCmexico/S167505a015/20241,34418.4%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • PES27.0%
  • RSP18.8%
  • FXM17.1%
  • MC14.4%
  • PT_MORENA_NAEM_CC11.1%
  • PAN_PRI_PRD8.9%
  • PVEM0.5%
Results for event-158e36c90b46607b0537730d
Label / candidateParty codeVotesShareSeatsStatus
PESmexico/S10c9e20015/20211,67827%UnknownRecorded
RSPmexico/S10c9e20015/20211,16818.8%UnknownRecorded
FXMmexico/S10c9e20015/20211,06417.1%UnknownRecorded
MCmexico/S10c9e20015/202189314.4%UnknownRecorded
PT_MORENA_NAEM_CCmexico/S10c9e20015/202169311.1%UnknownRecorded
PAN_PRI_PRDmexico/S10c9e20015/20215568.9%UnknownRecorded
PVEMmexico/S10c9e20015/2021320.5%UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • PRI22.6%
  • PAN_PRD_MC22.6%
  • PT_MORENA_ES21.7%
  • CAND_IND1916.0%
  • PVEM7.8%
  • PANAL4.5%
  • VR2.0%
Results for event-3c4355e66268a9f13fe1bbdc
Label / candidateParty codeVotesShareSeatsStatus
PRImexico/S9034c31411/20181,37022.6%UnknownRecorded
PAN_PRD_MCmexico/S9034c31411/20181,36922.6%UnknownRecorded
PT_MORENA_ESmexico/S9034c31411/20181,31621.7%UnknownRecorded
CAND_IND19mexico/S9034c31411/201896816%UnknownRecorded
PVEMmexico/S9034c31411/20184747.8%UnknownRecorded
PANALmexico/S9034c31411/20182734.5%UnknownRecorded
VRmexico/S9034c31411/20181242%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

33.430–100 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=17.996289424860855, oldest_gap=0.016966406515098953, previous_gap=8.382642998027613

pedersen volatility

Provisional volatility

4.5percentage 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=[[0,0,0,0,0,19.18081918081918,0,80.81918081918081],[0,0,0,0,0.5259697567389875,14.677843523997371,0,84.79618671926364],[0,23.24397692568714,0,0,8.042076688157449,0,0,68.71394638615541]]

pedersen volatility

Provisional volatility

30.76percentage 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=[[0,0,0,0,0,19.18081918081918,0,80.81918081918081],[0,0,0,0,0.5259697567389875,14.677843523997371,0,84.79618671926364],[0,23.24397692568714,0,0,8.042076688157449,0,0,68.71394638615541]]

pedersen volatility

Provisional volatility

17.63percentage 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=[[0,0,0,0,0,19.18081918081918,0,80.81918081918081],[0,0,0,0,0.5259697567389875,14.677843523997371,0,84.79618671926364],[0,23.24397692568714,0,0,8.042076688157449,0,0,68.71394638615541]]

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. “TONANITLA — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-15-125. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--S167505a015, mexico--S10c9e20015, mexico--S9034c31411.