Supreme Court Justice-elect Brian Hagedorn will be among those who address the GOP state convention tomorrow in Oshkosh. The party is also switching to a panel discussion format for several of its speakers rather than having them give individual speeches. For example, Senate Majority Leader Scott Fitzgerald, R-Junueau, and Assembly Speaker Robin Vos, R-Rochester, will be part of one panel. Meanwhile, U.S. Reps. Sean Duffy, of Wausau; Glenn Grothman, of Glenbeulah; and Bryan Steil, of Janesville; will be on another. U.S. Rep. Jim Sensenbrenner, the dean of the Wisconsin House delegation, will address the convention on his own. U.S. Sen.