Michele Tafoya, a longtime sportscaster, prepares a Republican bid for US Senate in Minnesota

By David Wright, CNN (CNN) — Michele Tafoya, a longtime sportscaster and conservative commentator, filed papers Tuesday to run for US Senate in Minnesota, giving the Republican Party a well-known candidate in a state that’s being roiled by the ongoing federal immigration crackdown. Tafoya filed paperwork with the Federal Election Commission. Chris Marston, a Republican