These would be on the table:
Illinois, Wisconsin, Ohio, New Hampshire, Pennsylvania, Florida, Louisiana, Missouri and Indiana.
Arizona is not on the table though.
Louisiana and not Arizona?
I was wondering the same thing. Only way Louisiana becomes competitive is if Mitch Landrieu runs. And I think he would only run if David Vitter were running for reelection, which he is not. A generic republican vs. generic democrat in Louisiana should be an easy victory for Republicans, but with Trump on the top of the ballot and Landrieu running, it could become competitive.
Arizona, with Trump as the nominee for president, could be competitive. Ann Kirkpatrick is a strong recruit, and McCain is pretty unpopular. This, along with Trump, could produce an upset that makes Kirkpatrick the next senator. Far from guaranteed, but possible.