House Republicans on Thursday narrowly approved a sweeping health care bill aimed at fulfilling their campaign promise to upend ObamaCare, after resuscitating a plan that had flatlined on the floor not six weeks earlier. 

The revised American Health Care Act passed on a 217-213 vote. 

The passage marked Republicans’ biggest step yet toward replacing the Affordable Care Act. The bill heads next to the Senate, however, where it faces an uncertain fate. 

All Democrats voted against the bill on the House floor Thursday afternoon, warning it would jeopardize coverage; 20 Republicans voted no.