Politico reports:
Roughly 100 of the 240 Republican-controlled House seats are currently within Democratic reach, posing the most serious threat to the GOP majority since the party won control in 2010.
Despite the GOP’s built-in advantages due to incumbency and redistricting, 60 of those seats are even more precariously positioned, with the Republican nominee either holding just a slight competitive edge, dead even against their Democratic opponent or trailing. Republicans started with a number of entrenched incumbents in seats that swung against the GOP in last year’s presidential election.
The problem? Many of them — like Ed Royce and Darrell Issa in Southern California, Rodney Frelinghuysen in New Jersey, Ileana Ros-Lehtinen in South Florida and Dave Reichert in Washington state — chose to retire rather than run for reelection.
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