Republican Ron Johnson, considered one of the most vulnerable members of the U.S. Senate, is expected to announce next week that he’s seeking a third term, according to two sources with direct knowledge of his plans.
Johnson, R-Oshkosh, vowed ahead of his 2016 reelection that it would be his final term in office. But he has since hedged on that vow, saying he hadn’t anticipated full Dem control of...
