2020 United States House of Representatives election in Delaware

The 2020 United States House of Representatives election in Delaware was held on November 3, 2020, to elect the U.S. representative from Delaware's at-large congressional district. The election coincided with the 2020 U.S. presidential election, as well as other elections to the House of Representatives, elections to the United States Senate and various state and local elections. The Democratic and Republican primaries was held on September 15, 2020.

2020 United States House of Representatives election in Delaware, at-large district

← 2018 November 3, 2020 2022 →

Candidate Lisa Blunt Rochester Lee Murphy Party Democratic Republican Popular vote 281,382 196,392 Percentage 57.63% 40.22%

County results Precinct results Rochester:      40–50%      50–60%      60–70%      70–80%      80–90%      >90% Murphy:      40–50%      50–60%      60–70%      70–80%      80–90%      No data

U.S. Representative before election Lisa Blunt Rochester Democratic Elected U.S. Representative Lisa Blunt Rochester Democratic

Incumbent Democratic Congresswoman Lisa Blunt Rochester ran for re-election to a third term. She was re-elected with 64.5% of the vote in 2018.^[1]

The Republican nominee was Lee Murphy, a private citizen who worked for most of his life at Amtrak as a conductor and manager.^[2] Murphy had also worked as an actor and had appeared in Netflix's House of Cards.

Democratic primary

Candidates

Nominee

• Lisa Blunt Rochester, incumbent U.S. representative^[3]

Declined

• Scott Walker, Republican nominee for Delaware's at-large congressional district in 2018^[4][5] (ran for Governor as a Republican)

Endorsements

Lisa Blunt Rochester

Organizations

• Sierra Club^[6]

Republican primary

Candidates

Nominee

• Lee Murphy, actor and candidate for Delaware's at-large congressional district in 2018^[7]

Eliminated in primary

• Matthew Morris, sales consultant^[8]

Results

Republican primary results^[9]

Party		Candidate	Votes	%
	Republican	Lee Murphy	39,179	73.81%
	Republican	Matthew Morris	13,901	26.19%
Total votes			53,080	100.00%

Libertarian primary

Candidates

Nominee

• David L. Rogers^[10]

Independent Party of Delaware

Declared

• Catherine S. Purcell, college student and pro-Trump activist^[10]

General election

Debate

2020 Delaware U.S. House of Representatives debate

No.	Date	Host	Moderator	Link	Democratic	Republican	Libertarian	Independent
Key:  P  Participant   A  Absent   N  Not invited   I  Invited  W  Withdrawn
					Lisa Blunt Rochester	Lee Murphy	David Rogers	Catherine Purcell
1	Oct. 14, 2020	University of Delaware	Ralph Begleiter	[11]	P	P	N	N

Predictions

Source	Ranking	As of
The Cook Political Report[12]	Safe D	November 2, 2020
Inside Elections[13]	Safe D	October 28, 2020
Sabato's Crystal Ball[14]	Safe D	November 2, 2020
Politico[15]	Safe D	November 2, 2020
Daily Kos[16]	Safe D	November 2, 2020
RCP[17]	Safe D	November 2, 2020

Polling

Poll source	Date(s) administered	Sample size[a]	Margin of error	Lisa Blunt Rochester (D)	Lee Murphy (R)	Catherine Purcell (DI)	David Rogers (L)	Other/ Undecided
University of Delaware[18]	September 21–27, 2020	847 (LV)	–	51%	29%	5%	3%	13%[b]

Results

2020 Delaware's at-large congressional district election^[19]

Party		Candidate	Votes	%	±%
	Democratic	Lisa Blunt Rochester (incumbent)	281,382	57.63%	−6.63%
	Republican	Lee Murphy	196,392	40.22%	+4.78%
	Independent Party	Catherine S. Purcell	6,682	1.37%	N/A
	Libertarian	David L. Rogers	3,814	0.78%	N/A
Total votes			488,270	100.0%	N/A
	Democratic hold

By county

County Lisa Blunt Rochester Democratic Lee Murphy Republican Catherine Purcell Delaware Independent David Rogers Libertarian Margin Total votes # % # % # % # % # % New Castle 184,337 66.31 87,581 31.50 3,831 1.38 2,255 0.81 96,796 34.82 278,004 Kent 42,984 50.79 39,586 46.78 1,284 1.52 768 0.91 3,398 4.01 84,622 Sussex 54,061 43.03 69,225 55.10 1,567 1.25 791 0.63 −15,164 −12.07 125,644 Totals 281,382 57.63 196,392 40.22 6,682 1.37 3,814 0.78 84,990 17.41 488,270

Notes

1. Key:
   A – all adults
   RV – registered voters
   LV – likely voters
   V – unclear
2. "None/other/undecided" with 13%