On June 27, Senator Mitch McConnell, the Republican majority leader, delayed the vote on the health care bill until after the July 4 recess, in an attempt to draw more support from concerned Republican senators.

The week before, Senate Republicans unveiled their health bill to repeal the Affordable Care Act. It needs at least 50 votes to pass (Vice President Mike Pence could cast a tiebreaking vote).

Several Republicans have said they would block a procedural step, known as a motion to proceed, if the bill doesn’t change. Every Democrat is expected to oppose the bill, which means three Republican “no” votes would block it.

Here is where every senator stands so on the bill itself so far:

48 No 11 No without changes, or concerned 24 Unclear 17 Supportive

Four of the most conservative Senate Republicans — Ted Cruz, Mike Lee, Ron Johnson and Rand Paul — announced in a statement on Thursday that they “are not ready to vote for this bill.” All four have called for a full repeal of the law.

Republican senators arranged by their ideology scores ← Less conservative More conservative → Note: Ideology measurements are based on DW-NOMINATE scores, which are based on Congressional votes. Republican senators arranged by their ideology scores ← Less conservative More conservative → Note: Ideology measurements are based on DW-NOMINATE scores, which are based on Congressional votes.

Susan Collins of Maine, a more moderate Republican, also expressed concerns. In a series of Twitter posts on Monday, she said that the bill does not fix problems for rural Maine and that the Medicaid cuts would hurt the “most vulnerable Americans.”

Dean Heller of Nevada said that he has “serious concerns” about how the bill would affect people newly covered under the Medicaid expansion. Rob Portman of Ohio said he was concerned about how the Medicaid changes would affect coverage for opioid addiction treatment.

The full list of lawmakers’ positions:

Republican Democrat Independent