****! Now Obama gets to appoint another one! ****!
No, he gets to NOMINATE one. The Senate is under no obligation to approve that nomination.
thomas's confirmation took a little over 100 days. think they can really leave a supreme court vacancy open for three times that?
Yes, but if Senate Republicans block the nomination for 10 months they will take a lot of heat and that's not too good an idea in an election year when 24 republican seats up for grabs and a loss of 4 seats would send control back to the democrats. I think they will opt to negotiate with Obama, however Obama might not be in a negotiating mood because if republicans block his nomination, then the democrats would have a liberal court for a year. If republicans win with Trump, there is no guarantee Trump would nominate a conservative.