MADISON, Wis. — Sinking in the national polls, the bumbling campaign of onetime frontrunner for the 2016 Republican presidential nomination, Wisconsin Gov. Scott Walker, is preparing to double down with renewed attacks on working people. Career politician Walker’s desperate bid to remain competitive on the backs of the middle class and working people will be unveiled in a Monday speech in Las Vegas Nevada, hometown of anti-union, Walker mega-donor Sheldon Adelson. “Scott Walker has always been willing to do or say anything to try to win an election,” commented One Wisconsin Now Executive Director Scot Ross. “It’s no surprise he’s...