On Dec. 24, in an early morning vote, the United States Senate passed health care reform. It was the first time the body had been in session on Christmas Eve since 1963. That's fitting, as it's arguably the most important piece of legislation the body has passed since 1963.

H.R. 3590, the Patient Protection and Affordable Care Act, passed with 60 votes, and though that sounds like a razor-thin margin given the odd rules of the Senate, it is a landslide in the more normal context for major choices in American politics. The last time a president won with 60 percent of the vote, for instance, was when Lyndon Johnson trounced Barry Goldwater in 1964. Health care reform passed the House with only 50.5 percent of the body voting for it. And the senators making up Thursday morning's 60 votes actually represent closer to 65 percent of the population. Harry Reid has much to be proud of.

For all the historic force of the vote — Ted Kennedy's widow, Vicki Kennedy, was in the chamber, as was the elderly John Dingell, whose father introduced the first national health care plan into the Congress almost a century ago — it has become difficult to write these milestone posts. Health care reform, by this point, has had a lot of milestones. It has cleared five committees. It has come through the House of Representatives. It has been merged into a single bill in the Senate. It has passed through the Senate. No previous health care reform bill has come anywhere near this far.

But there are more milestones left to achieve: The House and Senate need to agree on a bill. That bill has to pass both chambers again. And then the president has to sign the legislation.

Passing legislation, it turns out, is a long and ugly process. God, is it ugly. The compromises, both with powerful special interests and decisive senators. The trimming of ambitions and the budget gimmicks and the worship of Congressional Budget Office scores. By the end, you're passing a compromise of a deal of a negotiation of a concession.

But bad a system as it might be, it's the only one we've got. At least for now, this is what victory looks like. The slow, grinding, ineluctable advance of legislation that is quite similar, albeit not identical, to what you began with. It's not pretty, and it doesn't necessarily feel like winning is supposed to feel. But this bill will do most of the things supporters hoped it would do: cover about 95 percent of all legal residents, regulate insurers, set up competitive exchanges, pretty much end risk selection, institute a universal structure that we can improve and enhance as the years go on, and vastly reduce both medical and financial risk for families.

It's been a long time since the legislative system did anything this big, and people have forgotten how awful the victories are. But these are the victories, and if they feel bad to many, they will do good for more. As that comes clearer and clearer, this bill will come to feel more and more like the historic advance it actually is.