Texas Senator John Cornyn, Chairman of the National Republican Senatorial Committee, called Rep. Todd Akin’s comments on abortion in the case of rape "wrong, offensive and indefensible." Akin said over the weekend that in the case of "legitimate rape" a woman’s body "has ways to try to shut that whole thing down."

Republican Sen. Scott Brown from Massachusetts and Wisconsin Tea Party-backed Sen. Ron Johnson have called on Akin to remove his name from the November ballot.

Cornyn went on to say, "I recognize that this is a difficult time for him, but over the next twenty-four hours, Congressman Akin should carefully consider what is best for him, his family, the Republican Party, and the values that he cares about and has fought for throughout his career in public service."

Several media outlets are reporting the NRSC and Karl Rove’s Super PAC Crossroads GPS have said they won’t continue to fund Akin’s race if he decides to keep running.

The congressman acknowledged he misspoke but said he is not a quitter and plans to stay in the race. According to Missouri law, he needs to decide by Tuesday in order for the Republican Party to select a candidate to replace him.

Akin won the Missouri Republican primary earlier this month. He’s now running against incumbent Democrat Senator Claire McCaskill. Republicans had hoped to pick up the seat and control of the US Senate in November. A Mitt Romney campaign spokesman said Romney and his running mate Paul Ryan disagree with Akin’s comments. The campaign said a Romney-Ryan administration would not oppose abortion in cases of rape.