Republican senators poised to vote today on health care - what you need to know

Majority Leader Mitch McConnell needs 50 out of 52 Senate Republican votes today in the first major test for the GOP effort to repeal and replace Obamacare. Specifically, it's a vote on the motion to proceed to debate and amendments on the House-passed health care bill, CNN reports.

Here are some of the key facts in the action today:

• Sen. John McCain is coming back for the vote; he reportedly remains undecided on the final bill.
• Maine Sen. Susan Collins is expected to vote no, effectively leaving the determination up to eight senators.
• The votes should follow a closed-door weekly lunch meeting that's scheduled to begin at 12:45 p.m. The vote is expected at 2:15 this afternoon, then they'll call the yeas and nays.

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