Michael F. Brennan Ethan Strimling Portland, Maine, held an election for mayor on November 3, 2015.

[2] The new citizen-elected mayor serves full-time in the position for a four-year term, exercises the powers and duties enumerated in Article II Section 5 of the Portland City Charter,[3] be elected using instant-runoff voting,[4] and, like the rest of municipal government in Portland, be officially non-partisan.

[5] Ethan Strimling defeated incumbent mayor Michael F. Brennan and fellow challenger Tom MacMillan.

[6] The day after Ethan Strimling announced his candidacy for mayor, a group of city councilors and school board members led by Nicholas Mavodones announced their opposition to the reelection of Mayor Brennan and support of Strimling.

[8] Borth incumbent Brennan and Strimling opposed a $15 minium wage while MacMillan ran on raising the city's minium wage to $15.