The three Republican senators who said they can't support a last-ditch plan to repeal Obamacare faced criticism on Twitter from conservatives on Tuesday who grew angry over the lack of unanimity among GOP senators when it comes to repealing the law.

Sens. Shelley Moore Capito of West Virginia, Lisa Murkowski of Alaska and Susan Collins of Maine said that they would not support the repeal of Obamacare without a replacement plan stopping the bill from proceeding in the Senate. Capito and Murkowski drew several complaints in particular, since they had voted for the exact same bill two years earlier.

FreedomWorks Foundation, a conservative group, said Murkowski's decision to change her mind on the bill shows she is a "fraud," while others called them out for switching votes.

One conservative commentator questioned why the three senators were Republicans.

They also received praise from supporters of the law who said the three female senators had helped keep the bill from proceeding to a Senate vote.

Collins, Moore Capito and Murkowski said they did not support moving forward with voting on the Senate Healthcare bill championed by Senate Majority Leader Mitch McConnell and President Trump because it could hurt people in their states.

"I do not think that it's constructive to repeal a law that is so interwoven within our healthcare system without having a replacement in place," Collins said in a statement.

Moore Capito said in a statement that she "did not come to Washington to hurt people" and was concerned about the impact the healthcare bill would have on West Virginians.

"As I've been saying, the Senate should take a step back and engage in a bipartisan process to address the failures of the [Affordable Care Act] and stabilize the individual markets," Murkowski suggested in a statement.

Senate Majority Leader Mitch McConnell, R-Ky., said that the Obamacare clean repeal vote is likely to be brought up again in the Senate soon.

"I would remind everyone, that in that proposal, there is a two-year delay. A two-year delay, which would give us the opportunity to work out a complete replacement on a bipartisan basis with our Democratic friends. So that's a vote I think we are very likely to have in the very near future," McConnell said during a Senate Republican leadership press hearing.