More Republicans are not seeking re-election this year than at any point since 2012, according to data from Ballotpedia , a nonpartisan, nonprofit online encyclopedia of American politics. Out of a total of 65 U.S. incumbents from both parties who will not seek to keep their post this year, 40 are Republican lawmakers, the website reported—six in the Senate and 34 in the House. On top of that, Republicans also represent the majority of lawmakers leaving office early this year—six out of ten.