House Republican leaders have delayed Thursday’s planned vote on the American Health Care Act (AHCA).

Democrats have been vocal in their opposition to the bill that would repeal and replace parts of the Affordable Care Act (ACA), saying it would cause too many people to lose insurance coverage and raise costs for those who can least afford it.

But GOP members of the conservative House Freedom Caucus have also opposed the bill, saying it does not go far enough in rolling back the ACA’s tax subsidies.

Republican leaders made several changes to the bill in an effort to garner support from GOP holdouts, but those changes and urging from President Donald Trump and House Speaker Paul Ryan were not enough to appease that bloc. The changes have also alienated some moderate Republicans, who said they were pulling support.

Several lawmakers say a vote could still happen on Friday.

The American Hospital Association (AHA), LeadingAge and SDAHO have joined numerous other health care groups in opposition to the bill in its current form.