Office briefing

ATENANGO DEL RIO — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · ATENANGO DEL RIO / GUERRERO · municipal · Municipal governmentMX-M-12-8

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: ATENANGO DEL RIO / GUERRERO
Next election: 2027-06-06
Linked upcoming event: next-ee03ebcdb13364424c87c8d7
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

PT52.1%
MORENA42.4%
PAN_PRI_PRD2.0%
PVEM0.4%
PBG0.4%
PAC0.1%
MLGRO0.1%

Results for event-7df15fb7d2808f4eee947cc6
Label / candidate	Party code	Votes	Share	Seats	Status
PT	mexico/S0bb0211093/2024	2,409	52.1%	Unknown	Recorded
MORENA	mexico/S0bb0211093/2024	1,960	42.4%	Unknown	Recorded
PAN_PRI_PRD	mexico/S0bb0211093/2024	91	2%	Unknown	Recorded
PVEM	mexico/S0bb0211093/2024	19	0.4%	Unknown	Recorded
PBG	mexico/S0bb0211093/2024	18	0.4%	Unknown	Recorded
PAC	mexico/S0bb0211093/2024	6	0.1%	Unknown	Recorded
MLGRO	mexico/S0bb0211093/2024	4	0.1%	Unknown	Recorded

2021

Special · Legal certification not established · candidate marks

PES33.0%
FXP24.7%
PRI_PRD16.7%
PT13.0%
MORENA5.6%
PVEM2.6%

Results for event-cf60cbb84795eae47db12241
Label / candidate	Party code	Votes	Share	Seats	Status
PES	mexico/S3439e2a708/2021	1,612	33%	Unknown	Recorded
FXP	mexico/S3439e2a708/2021	1,206	24.7%	Unknown	Recorded
PRI_PRD	mexico/S3439e2a708/2021	815	16.7%	Unknown	Recorded
PT	mexico/S3439e2a708/2021	638	13%	Unknown	Recorded
MORENA	mexico/S3439e2a708/2021	272	5.6%	Unknown	Recorded
PVEM	mexico/S3439e2a708/2021	128	2.6%	Unknown	Recorded

2018

Special · Legal certification not established · candidate marks

PT39.6%
PRI_PVEM27.0%
CG23.7%
MORENA_ES3.7%
PAN_PRD_MC1.2%
IHG0.5%
PANAL0.3%
PPG0.0%

Results for event-19ca7e3c539626d81f1bc5d4
Label / candidate	Party code	Votes	Share	Seats	Status
PT	mexico/Sb94592837d/2018	1,895	39.6%	Unknown	Recorded
PRI_PVEM	mexico/Sb94592837d/2018	1,291	27%	Unknown	Recorded
CG	mexico/Sb94592837d/2018	1,135	23.7%	Unknown	Recorded
MORENA_ES	mexico/Sb94592837d/2018	177	3.7%	Unknown	Recorded
PAN_PRD_MC	mexico/Sb94592837d/2018	55	1.2%	Unknown	Recorded
IHG	mexico/Sb94592837d/2018	22	0.5%	Unknown	Recorded
PANAL	mexico/Sb94592837d/2018	14	0.3%	Unknown	Recorded
PPG	mexico/Sb94592837d/2018	2	0%	Unknown	Recorded

4. Competition and volatility

competition index

Provisional imported-series CI

50.50–100 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=9.962280896383405, oldest_gap=13.156175125245042, previous_gap=8.691928923142797

pedersen volatility

Provisional volatility

77.46percentage 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=[[0,0,0,53.450188595518085,0.4215664521854892,0,43.48790769913468,2.640337253161748],[0,0,0,13.658745450652965,2.7403125669021624,0,5.823164204667095,77.77777777777777],[0,0,0,41.27641036811152,0,0,0,58.723589631888466]]

pedersen volatility

Provisional volatility

27.62percentage points

Comparison status: Previous interval

Method pedersen.grouped.v1. Inputs: groups=["PAN","PRI","PRD","PT","PVEM","MC","MORENA","Other"], interval=Previous interval, vectors=[[0,0,0,53.450188595518085,0.4215664521854892,0,43.48790769913468,2.640337253161748],[0,0,0,13.658745450652965,2.7403125669021624,0,5.823164204667095,77.77777777777777],[0,0,0,41.27641036811152,0,0,0,58.723589631888466]]

pedersen volatility

Provisional volatility

52.54percentage points

Comparison status: Both intervals mean

Method pedersen.grouped.v1. Inputs: groups=["PAN","PRI","PRD","PT","PVEM","MC","MORENA","Other"], interval=Both intervals mean, vectors=[[0,0,0,53.450188595518085,0.4215664521854892,0,43.48790769913468,2.640337253161748],[0,0,0,13.658745450652965,2.7403125669021624,0,5.823164204667095,77.77777777777777],[0,0,0,41.27641036811152,0,0,0,58.723589631888466]]

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

Mexico: https://sicee-api.ine.mx/api/v1/local/cards/getTarjOnceTablasamunicipiosLoc · rights unknown
Mexico: mx_returns_AYUN_12_8_2024.json · rights unknown
Mexico: mx_returns_AYUN_12_8_2021.json · rights unknown
Mexico: mx_returns_AYUN_12_8_2018.json · rights unknown

Cite this record

Center for Digital Democracy. “ATENANGO DEL RIO — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-12-8. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--S0bb0211093, mexico--S3439e2a708, mexico--Sb94592837d.