State Rep. Jason Lewis, a Democrat from Winchester, and Monica Medeiros, a Republican and alderman-at-large in Melrose, won their respective special state senate primaries Tuesday in the 5th Middlesex District.
Lewis announced his victory shortly before 9 p.m. Tuesday.
In the Democratic primary, Lewis earned more than 42 percent of the vote to defeat State Rep. Christopher Fallon, of Malden, and Anthony Guardia, an attorney from Wakefield who is the director of development at the non-profit HomeStart, which works to end and prevent homelessness.
Medeiros was unopposed in the Republican primary.
The 5th Middlesex District covers Malden, Melrose, Reading, Stoneham, Wakefield and precincts 1, 2, 3 and 8 in Winchester. Now U.S. Rep. Katherine Clark vacated the state senate seat, after winning now U.S. Sen. Ed Markey’s former congressional seat in a special election.
Lewis and Medeiros will face each other for the seat on Tuesday, April 1.
Lewis has served in the Massachusetts House for five years.