Sen. Tammy Baldwin (D-WI) speaks as Sen. Mark Warner (L) (D-VA) and Senate Minority Leader Charles Schumer (R) (D-NY) look during a news conference on Capitol Hill on March 14, 2017 in Washington, DC. (Photo by Justin Sullivan/Getty Images)
(KMSP) - Democratic U.S. Sen. Tammy Baldwin has won a second term, defeating Republican challenger Leah Vukmir.
Baldwin led Leah Vukmir in fundraising and polls throughout the race.
The Associated Press contributed to this report.