Retired firefighter Gamache elected alderman in Ward 11
Gamache defeated Emily Sandblade, a small-government Republican and advocate for the city's tax cap, by a vote of 1,392 to 1,182.
Gamache will fill the seat vacated by Russ Ouellette, who resigned earlier this year after his arrest in July. Ouellette later pleaded guilty to assault charges stemming from a late-night encounter with a woman.
Gamache is a retired district chief who was a fourth-generation firefighter.