Minority Leader John BoehnerJohn BoehnerLobbyists bounce back under Trump Business groups silent on Trump's Ex-Im nominee Chaffetz won't run for reelection MORE (R-Ohio) believes there are 100 House seats in play this election year, but he won't say which races he is talking about.

The top-ranking House Republican told The Hill Wednesday that "there’s no formula, but it’s pretty clear which ones they are."

Other GOP leaders have predicted that Republicans will win back the House this fall, but most have refrained from offering specific numbers.

Republicans would need to win about 40 seats in the fall to regain control of the House. They suffered a major setback Tuesday when Democrats retained the late Rep. John Murtha's (D-Pa.) seat in a special election.

Rep. Jim Jordan (R-Ohio), who is involved in the Republican outreach effort to cultivate candidates this election cycle, surmised that BoehnerJohn BoehnerLobbyists bounce back under Trump Business groups silent on Trump's Ex-Im nominee Chaffetz won't run for reelection MORE's 100 seats come from the districts that Sen. John McCainJohn McCainTrump wall faces skepticism on border No Congress members along Mexico border support funding Trump's wall Treasury won’t grant Exxon drilling waiver for Russia MORE (R-Ariz.) won in the 2008 presidential election, and districts held at some time by the GOP since 1994.

Boehner has stressed that he is not predicting Republicans will win 100 seats, but that 100 are up for grabs. Asked for a reaction to Boehner's claim during an interview on Wednesday, Speaker Nancy Pelosi (D-Calif.) told The Hill, "Let him think that."

Pelosi later said more than 200 House Democrats will "easily" be reelected in November.