On Thursday, House Republicans successfully voted to unwind major parts of the Affordable Care Act. But they barely got it through their own chamber: After having to pull a version of this bill in March for lack of support from both conservative and moderate Republicans, it passed by a margin of four votes.

All 193 Democrats opposed the bill, alongside 20 Republicans — primarily moderates who thought the legislation rolls back health-care benefits too much.

[House Republicans narrowly pass controversial bill to revise Affordable Care Act]

To get this version passed, Republican leaders positioned the bill far to the right of the political spectrum to win the support of most of the conservative House Freedom Caucus members and keep some moderates on board. And, that strategy worked.