Incumbent Republican Rep. Ken Calvert won re-election to California's 41st Congressional District – which was deemed a tossup by observers – against Democratic challenger Will Rollins.

With Levin leading Matt Gunderson by 4 percentage points, the Associated Press called the race in the incumbent’s favor Tuesday.

The seat, vacated when three-term incumbent Rep. Katie Porter ran for U.S. Senate, quickly became one of the most closely watched races in the nation.