Office briefing

SAN LUIS RIO COLORADO — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · SAN LUIS RIO COLORADO / SONORA · municipal · Municipal governmentMX-M-26-55

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: SAN LUIS RIO COLORADO / SONORA
Next election: 2027-06-06
Linked upcoming event: next-3044c81e669be972eb983733
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

C_MORENA_PT_PVEM_NAS_PES41.7%
PAN_PRI_PRD34.0%
MC18.6%
PS2.4%

Results for event-02702ba5938acbd27bdc51f7
Label / candidate	Party code	Votes	Share	Seats	Status
C_MORENA_PT_PVEM_NAS_PES	mexico/S2cbb55683e/2024	27,738	41.7%	Unknown	Recorded
PAN_PRI_PRD	mexico/S2cbb55683e/2024	22,618	34%	Unknown	Recorded
MC	mexico/S2cbb55683e/2024	12,394	18.6%	Unknown	Recorded
PS	mexico/S2cbb55683e/2024	1,579	2.4%	Unknown	Recorded

2021

Special · Legal certification not established · candidate marks

MORENA41.8%
CAND_COM_PAN_PRI_PRD20.5%
MC12.6%
PVEM10.0%
FXM4.8%
PT4.2%
PES3.1%

Results for event-06e0f015b21347158e8ab7a6
Label / candidate	Party code	Votes	Share	Seats	Status
MORENA	mexico/Scf244fc04f/2021	20,222	41.8%	Unknown	Recorded
CAND_COM_PAN_PRI_PRD	mexico/Scf244fc04f/2021	9,925	20.5%	Unknown	Recorded
MC	mexico/Scf244fc04f/2021	6,082	12.6%	Unknown	Recorded
PVEM	mexico/Scf244fc04f/2021	4,825	10%	Unknown	Recorded
FXM	mexico/Scf244fc04f/2021	2,324	4.8%	Unknown	Recorded
PT	mexico/Scf244fc04f/2021	2,017	4.2%	Unknown	Recorded
PES	mexico/Scf244fc04f/2021	1,491	3.1%	Unknown	Recorded

2018

Special · Legal certification not established · candidate marks

PT_MORENA_ES44.6%
PRI_PVEM_PANAL23.9%
PAN_PRD21.1%
CAND_IND84.5%
MC2.2%
MAS1.0%

Results for event-69f2227d6997337c70e33984
Label / candidate	Party code	Votes	Share	Seats	Status
PT_MORENA_ES	mexico/S13862eb416/2018	27,836	44.6%	Unknown	Recorded
PRI_PVEM_PANAL	mexico/S13862eb416/2018	14,935	23.9%	Unknown	Recorded
PAN_PRD	mexico/S13862eb416/2018	13,152	21.1%	Unknown	Recorded
CAND_IND8	mexico/S13862eb416/2018	2,784	4.5%	Unknown	Recorded
MC	mexico/S13862eb416/2018	1,397	2.2%	Unknown	Recorded
MAS	mexico/S13862eb416/2018	629	1%	Unknown	Recorded

4. Competition and volatility

competition index

Provisional imported-series CI

32.560–100 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=7.959085326990937, oldest_gap=21.242158299441815, previous_gap=21.96177963571215

pedersen volatility

Provisional volatility

57.72percentage 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=[[0,0,0,0,0,19.26658272318861,0,80.7334172768114],[0,0,0,4.301923815211364,10.290918397815979,12.971889263319541,43.13014545919891,29.30512306445421],[0,0,0,0,0,2.300232163733061,0,97.69976783626694]]

pedersen volatility

Provisional volatility

68.39percentage points

Comparison status: Previous interval

Method pedersen.grouped.v1. Inputs: groups=["PAN","PRI","PRD","PT","PVEM","MC","MORENA","Other"], interval=Previous interval, vectors=[[0,0,0,0,0,19.26658272318861,0,80.7334172768114],[0,0,0,4.301923815211364,10.290918397815979,12.971889263319541,43.13014545919891,29.30512306445421],[0,0,0,0,0,2.300232163733061,0,97.69976783626694]]

pedersen volatility

Provisional volatility

63.06percentage 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=[[0,0,0,0,0,19.26658272318861,0,80.7334172768114],[0,0,0,4.301923815211364,10.290918397815979,12.971889263319541,43.13014545919891,29.30512306445421],[0,0,0,0,0,2.300232163733061,0,97.69976783626694]]

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_26_55_2024.json · rights unknown
Mexico: mx_returns_AYUN_26_55_2021.json · rights unknown
Mexico: mx_returns_AYUN_26_55_2018.json · rights unknown

Cite this record

Center for Digital Democracy. “SAN LUIS RIO COLORADO — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-26-55. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--S2cbb55683e, mexico--Scf244fc04f, mexico--S13862eb416.