Senate President Thomas V. Mike Miller. Far be it from us to suggest he’s losing his iron grip on the Senate, but he’s certainly going to be less comfortable. Two of his four standing committee chairs lost in primaries — Thomas M. “Mac” Middleton and Joan Carter Conway — as did his No. 2, Nathaniel McFadden. A third, Ed Kasemeyer, retired, as did close allies John Astle and Ed Degrange. Another of his allies, Sen. Katherine Klausmeier, held on in a tight race, but only by aggressively distancing herself from him.