Senate Majority Leader Mitch McConnell does not have the votes necessary to pass a bill to repeal portions of the 2010 health care law, the Kentucky Republican’s “Plan B” following the failure of the GOP plan to overhaul the U.S. health insurance markets.

Three Republican senators — Maine’s Susan Collins, West Virginia’s Shelley Moore Capito and Alaska’s Lisa Murkowski — have all stated their intentions to vote against a procedural motion that would allow McConnell to bring up a 2015 measure that would end the law’s Medicaid expansion and repeal other portions of it starting in two years.

McConnell could only afford to lose the support of two Republicans.

“For months, I have expressed reservations about the direction of the bill to repeal and replace Obamacare,” Capito said in a statement. “I cannot vote to repeal Obamacare without a replacement plan that addresses my concerns and the needs of West Virginians.”

Murkowski told reporters on Tuesday she would vote “no” on a motion to proceed to the House-passed health care bill that McConnell said he would bring up in the coming days.