MADISON, Wis. — Thirsty for some Packers and politics? The Wisconsin GOP and some national friends say they’ve got a slushie of truth for you. On Saturday beginning at 1 p.m., the Republican Party of Wisconsin and the National Republican Senatorial Committee will hand out free slushies at the Green Bay Packers home, Lambeau Field, to “highlight Russ Feingold’s (don’t call him Senator Russ) slush fund scandal.” The liberal Feingold is challenging U.S. Sen. Ron Johnson for the conservative’s Senate seat in a rematch of the 2010 race. Earlier this week, the NRSC launched a billboard and the WISGOP released...