Senate Majority Leader Mitch McConnell (R-KY) will be making another stab at repealing and replacing Obamacare on Tuesday. Given how the Republicans have largely fumbled the Obamacare repeal and replace effort, it's hard to have any confidence in them at this point.

Here are five things you need to know about the Senate's latest effort to repeal and replace Obamacare.

1. On Tuesday, the Senate will vote to start debating the health care bill passed by the House. For more details on this bill, read The Daily Wire's primer on it here.

2. McConnell can only afford to lose one other Republican vote in order to clear this procedural motion. Sen. Susan Collins (R-ME) is expected to vote no on the motion to debate, regardless of what proposal follows if the Senate approves the motion. Sen. John McCain will be present for the vote.

3. From there, the health care vote could play out in a number of ways. The New York Times explains that if the procedural motion to start debate passes, the Senate will start considering a myriad of amendments that would serve as "substitutes" for the bill, although it's not known which ones will be discussed.

It is expected for those amendments to fail, which would mean that McConnell would likely turn toward a separate proposal, although it's not clear what exactly that proposal would entail.

4. People seem to be in the dark about what's happening.

5. If all else fails, the Senate might settle on a "skinny repeal" of Obamacare. This would mean that the Senate would vote on repealing the individual and employer mandates and possibly the medical device tax as well. At this point the Senate is just looking to pass something to make it seem like they're following through on their promise to repeal and replace Obamacare.

Follow Aaron Bandler on Twitter.