2018 United States House of Representatives election in Guam

The 2018 United States House of Representatives election in Guam was held on Tuesday, November 6, 2018, to elect the non-voting Delegate to the United States House of Representatives from Guam's at-large congressional district. The election coincided with the elections of other federal and state offices, including the larger 2018 Guamanian general election, the 2018 Guamanian gubernatorial election, and the 2018 United States House of Representatives elections.

2018 United States House of Representatives of Guam

← 2016 November 6, 2018 2020 →

Nominee Michael San Nicolas Doris Flores-Brooks Party Democratic Republican Popular vote 19,193 15,398 Percentage 54.9% 44.0%

Results by village

Delegate before election Madeleine Bordallo Democratic Elected Delegate Michael San Nicolas Democratic

Guam's at-large congressional district

The non-voting delegate is elected for a two-year term. Incumbent Democratic Delegate Madeleine Bordallo, who had represented the district since 2003, lost her primary election to Michael San Nicolas, a senator of the Guam Legislature since 2013. San Nicolas was challenged by Republican former public auditor Doris Flores-Brooks for Guam's lone-seat in the United States House of Representatives.

Democratic candidate Michael San Nicolas attained the higher number of votes and took office in January 2019 as Guam's congressional delegate.

Democratic primary

Candidates

Declared

• Madeleine Bordallo, incumbent delegate
• Michael San Nicolas, island senator in the Guam Legislature

Primary results

Democratic primary results^[1]

Party		Candidate	Votes	%
	Democratic	Michael San Nicolas	12,456	51.48
	Democratic	Madeleine Bordallo (incumbent)	11,635	48.08
	Democratic	Write-ins	107	0.44
Total votes			24,198	100.0

Republican primary

Candidates

Declared

• Doris Flores-Brooks, public auditor

Declined

• Jonathan Diaz
• Eric Lin

Primary results

Republican primary results^[1]

Party		Candidate	Votes	%
	Republican	Doris Flores-Brooks	2,817	99.12
	Republican	Write-ins	25	0.88
Total votes			2,842	100.0

General election

Results

Guam's at-large congressional district, 2018^[2]

Party		Candidate	Votes	%	±%
	Democratic	Michael San Nicolas	19,193	54.85%	+1.16%
	Republican	Doris Flores-Brooks	15,398	44.01%	−1.70%
	Write-in		399	1.14%	+0.54%
Total votes			34,990	100.00%	N/A
	Democratic hold