A group of Republican senators will appeal Joe Biden’s election as U.S. president when Congress formally approves the Electoral College vote next week.

Sen. Ted Cruz of Texas on Saturday announced a coalition of 11 senators who have been enlisted for Trump’s effort to subvert the will of American voters.

This follows the declaration from Sen. Josh Hawley of Missouri, who was the first to buck Senate leadership by saying he would join with House Republicans in objecting to the state tallies during Wednesday’s joint session of Congress.

Trump’s refusal to accept his defeat is tearing the party apart as Republicans are forced to make consequential choices that will set the contours of the post-Trump era. Hawley and Cruz are both among potential 2024 presidential contenders.

Senate Majority Leader Mitch McConnell had urged his party not to try to overturn what nonpartisan election officials have concluded was a free and fair vote.