As PRE 9-11 answered so nicely...
You might confuse the Merrick Garland cliffhanger now, right?
Yeah, well that's only valid this year. Next year, the Senate will appoint a Scalia replacement for sure.
And this Senate is - for now - Republican controlled. Which might, and there's a good chance - become Dems controlled again.
Then, Merrick will be appointed before the next President gets sworn in.
Timeline matters.
Election - November
Senate - back in session on January 3rd.
President inauguration - January 22nd.
3 weeks overlap. If Dems controlled the Senate acts at Obama's request.