By SCOTT BAUER
MADISON, Wis. (AP) — Wisconsin Democrats looking to unseat Republican Sen. Ron Johnson are focusing their attacks on him, and not each other, as each of the eight candidates make their case to party activists at the state convention held six weeks before the primary. The Democratic Senate candidates on Sunday blasted Johnson for his attempt to deliver fake Republican Electoral College ballots, his skepticism over COVID-19 vaccines, his opposition to gun control measures and his support for overturning Roe v. Wade. Polls show a tight Democratic primary between Lt. Gov. Mandela Barnes and Milwaukee Bucks executive Alex Lasry.