Senate Republicans plan to repeal PPACA with 51 votes

Under "reconciliation," the Senate may bypass the 60-vote threshold and make changes to the federal budget with 51 votes. The problem is that many parts of PPACA aren't budgetary and will likely be ruled ineligible for repeal by the chair under reconciliation, Senate experts including Norm Ornstein of the American Enterprise Institute have said.

So, what happens next?

One option is that Republicans adhere to the limits and repeal as much of PPACA as they can—taxes and spending provisions that construct critical components of the law would qualify. Democrats would vote no, but there are 54 Republicans, likely enough to pass a bill that substantially guts the health care law.

"We will repeal all the parts of Obamacare that we can under reconciliation," North Dakota Sen. John Hoeven, a Republican, told Bloomberg. "I don't think we can get everything, but as much as we can get through reconciliation we will do. But the problem will be that the president will veto it."

See also: Senate adopts budget that lets Republicans seek PPACA repeal

Don Stewart, McConnell's deputy chief of staff, said that "as Sen. McConnell has said repeatedly all year, reconciliation provides the tools necessary to end Obamacare. You can't get at every little piece, but the big parts are tax and spend." He said McConnell has acknowledged that there are "limits" to what can be done under reconciliation.

The second option is for Republicans to move to overrule the chair's ruling, a rare move that would require 51 votes to pull off and effectively change a longstanding rule. This appears unlikely. As even Lee, who had been pushing to repeal PPACA even if it means altering some rules, is now steering clear of this option.

"This joint statement has nothing to do with appealing to the chair," Lee spokesman Conn Carroll said. "Lee agreed to abandon that appeal last night in exchange for this recommitment from McConnell to repeal Obamacare through reconciliation."

The ongoing push reveals that Republicans remain devoted to undoing PPACA, even as some 17 million people have gained health insurance coverage under the law, according to a May estimate by the RAND Corp.