Wisconsin State Senator Leah Vukmir’s campaign to win the 2018 GOP U.S. Senate nomination and challenge incumbent Tammy Baldwin seems to be gaining traction against businessman Kevin Nicholson (as businessman and 2012 candidate Eric Hovde waits in the wings to potentially complicate the race). If Vukmir is successful, she will become just the second woman to win a Republican U.S. Senate nomination for the office in Wisconsin history joining State Senator Susan Engeleiter in 1988. Engeleiter came up 4.5 points shy of picking up William Proxmire’s open seat as Herb Kohl won his first of four terms. The only other woman to appear on a Republican U.S. Senate primary ballot in the state was Treasurer Cathy Zeuske in 1994 who placed third of four candidates with 17.0 percent of the vote, losing to State Assemblyman Robert Welch. Similarly, only two Democratic women have appeared on a U.S. Senate primary ballot over the last 100+ years: national party committeewoman Gertrude Bowler in 1934 (placing last in a five-candidate field with 12.9 percent) and Senator Baldwin in 2012.