WASHINGTON After years of promises and months of delays, House Republicans passed their version of an Obamacare repeal and replacement Thursday, muscling the far-right legislation through their chamber by feverishly pressuring moderates in the closing days.

Republicans passed the bill 217-213, with 20 Republicans voting no and not a single Democrat voting in support.

But what seems like a victory for House Republicans may ultimately be their downfall .

Democrats were of two minds about Republicans advancing the bill, which would gut some of Obamacares most popular provisions (including protections for people with pre-existing conditions as well as the Medicaid expansion).

On one hand, Democrats desperately wanted to protect President Barack Obama s signature law. On the other hand, Democrats believe perhaps correctly that this extremely conservative bill cant pass the Senate, and that House Republicans may have just hung a profoundly unpopular legislation around the necks of some of their most vulnerable members.

As Minority Leader Nancy Pelosi (D-Calif.) told Republicans during her floor speech before the vote, Democrats plan to tattoo every provision of this bill to the foreheads of Republicans. You will glow in the dark, Pelosi said.

While Republicans were cheering as they passed the voting threshold requirements, Democrats began singing to their counterparts the popular anthem of Na-na-na-na, na-na-na-na, hey, hey, hey! Goodbye!

A number of vulnerable Republicans also held off on voting for the bill until it was clear leadership needed their vote. Of particular note, Carlos Curbelo (R-Fla.), Darrell Issa (R-Calif.), and Peter Roskam (R-Ill.) all waited to see if their votes would be needed before they supported the bill. Ultimately, leadership needed all of them.

When Democrats passed the health care law in 2010, many members knew it was coming at the expense of their seats. They did it, however, because it was policy they deeply believed in, protecting millions of sick and poor Americans while growing the number of insured in the country to record highs.

Republicans marched off this potential political cliff knowing their bill would uninsure millions, undermine protections for the sick and poor, and probably face little chance of becoming law and they did it without a revised score from the Congressional Budget Office.

But at least its off their plate.

That was the thinking among many members who just wanted to advance the process to the Senate and fulfill a promise that every Republican ran on: to repeal and replace Obamacare.

A number of the last remaining holdouts on the GOP health care legislation said in the closing days that they just wanted to move on. One vulnerable Republican, Rep. Martha McSally of Arizona, told members in a closed door meeting on Thursday that they just had to get this fucking thing done, according to members and aides present.

Rep. Daniel Webster (R-Fla.), one of the last Republicans to flip from no to yes, changed his position after he got assurances from President Donald Trump , Vice President Mike Pence , and Speaker Paul Ryan (R-Wis.) that they would address Websters concern about Florida having to pick up a clawback in federal funding for seniors in nursing homes, even though that fix isnt in the legislation and leaders havent agreed on what theyll do.

We got several on line, Webster said Thursday. Were working on those, were going to get some scores and so forth before we actually commit, and Im willing to do that.

Pressed that he was, in essence, voting to pass the legislation before he knows what will ultimately be in it, Webster said he was just advancing the process.

Theres plenty of votes between now and the end. This is for this vote, he said.

As long as we get to a process, Webster added. As long as we have a conference, as long as the Senate has to vote, as long as we get another vote on the conference report, which we will, then theres all kinds of ways to block [it] in the future if it doesnt work out.

Republicans are also voting on this latest legislation without a CBO score, a fact Republicans either shrugged off or denied, claiming that an earlier score was sufficient.

We already had the Congressional Budget score when we did the main bill, Rep. David McKinley (R-W.V.) told reporters Thursday morning. These are amendments that only perfected, [and] do not add costs.

McKinley added that the CBO score could only get better with the latest amendments, but when pressed how he knew that, McKinley ignored the question.

The amendments that McKinley believes will improve the legislation were critical to getting the bill over the finish line. The first amendment, which brought roughly 20 Freedom Caucus members who were voting no to yes, would allow states to opt out of the Obamacare provisions ensuring that people with pre-existing conditions are charged the same amount as healthy people, as well as the provisions mandating that insurers cover 10 essential health benefits things like lab services, maternity care and emergency room visits.

That amendment, worked out between moderate leader Rep. Tom MacArthur (R-N.J.) and Freedom Caucus Chairman Rep. Mark Meadows (R-N.C.), was key to reviving health care talks, after the first version of the bill was pulled from the floor at the end of March.