There will remain eight state primaries this year after today, but none involving competitive Senate seats (unless you count Louisiana, which has the first stage of its Top Two primary on November 4). So the last chance for a GOP Senate upset–the big discussion point throughout the primaries–is in Alaska today.
It would be judged an upset if Lt. Gov. Mead Treadwell beat former Natural Resources Commissioner Dan Sullivan for the right to take on incumbent Sen. Mark Begich. But that’s mainly a matter of money and general electability rather than ideology. The bigger and ideologically significant upset would be another win by former House Speaker Joe Miller, who’s been running a poorly financed third in the race in the wake of his general election loss in 2010 to a write-in campaign from incumbent Sen. Lisa Murkowski (whom Miller had beaten in the GOP primary). It’s very unlikely to happen.
The other nationally prominent race today is actually a state senate special election in VA that will determine control of the chamber. It’s a historically Democratic district, but also one that’s been trending heavily Republican in presidential contests. So Republican state delegate Ben Chafin is a solid favorite over Democrat Mike Hymes. This is the district recently abandoned by Democrat Phil Puckett in very suspicious circumstances (a cushy state job for him–which he was then forced to quit–and a judicial confirmation for his daughter).
Meanwhile, in Hawaii, as expected, Sen. Dean Schatz held onto–and actually increased–his victory margin over Rep. Collen Hanabusa in a special Senate Democratic primary. No final word yet as to whether Hanabusa will challenge the results on grounds that elections were arbitrarily held in some places on primary day but not in others. But it looks good for Schatz.