uncontested election; election in a safe seat
Refers to an election where the outcome is virtually certain, with little real competition or campaigning, like a 'breeze-less' race.
This mayoral election was an uncontested race, and the incumbent won by a landslide.
無投票当選 means winning without a vote (unopposed), while 無風選挙 implies an election is held but lacks real competition.
Compound of 無風 (no wind, calm) and 選挙 (election), metaphorically describing an election with no 'winds' of change or contest.