2018Final results
2018 election for California's 51st District
U.S. House · California
Juan Vargas (D) won with 71.2% of the vote, defeating Juan M. Hidalgo Jr. (R) by 42.4 points.
Juan VargasDemocrat · winner
71.2%109,527
Juan M. Hidalgo Jr.Republican
28.8%44,301
153,828 votes
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
The seat over time
D − R margin in this seat's races around 2018
Races before and after
Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 6:17 AM ET
Money in this race
Each line compares the two campaigns on one scale.
Juan VargasJuan M. Hidalgo Jr.
$879K
Raised by the campaign
$73.2K
$887.1K
Spent by the campaign
$70.6K
$71.7K
Cash on hand
$2.7K
Campaign money: FEC, through Dec 31, 2018.
Source: FEC campaign filingsUpdated Dec 31, 2018