Holding the Senate looks tricky since there are 21 Democrat seats and only 10 Republican seats at stake (this is the class from Bush's last mid-term election). Currently electionprojection.com is showing 4 Republican pickups and 1 Democrat pickup, for a final Senate composition of 50-R, 48-D, and 2-Independents.
I would also guess that the ruling also means the Medicaid extensions are also dead in most states (The court voted 7-2 on that issue).
I would also guess that the ruling also means the Medicaid extensions are also dead in most states (The court voted 7-2 on that issue).