Just started up: you can live-watch it here.
[UPDATE]: …not bad, not bad. The State of the Union rebuttal is typically not the best gig in This Town, but Senator Ernst avoided technical bobbles and put out what is basically going to be the Republican theme for the next two years. To wit: Let’s return to normalcy, and we’re the grown-ups in the room. Given the way that the President couldn’t resist sparring with the GOP Congress in his own speech – seriously, that plays well to your own side, but just your own side – this is a good theme for us to have.