Rep. Darrell Issa (R-CA) announced Wednesday that he will be retiring, bring the number of Republican House members not seeking reelection to a record-breaking 31.
According to the Week, the last time a party left en masse was in 1994 when 28 Democrats made their exit.
"Vulnerable House Republicans would clearly rather call it quits than stand for re-election with a deeply unpopular agenda hanging over their heads," Democratic Congressional Campaign Committee spokesman Tyler Law told NPR.
Democrats need to pick up at least 24 of those seats if they want to regain the majority, which is looking more and more possible.
A Washington Post/ABC News poll from November found that hypothetical Democratic candidates are favored by voters against their Republican counterparts 51 percent to 40 percent.