The Preliminary Municipal Election in the Boston mayoral race is a preliminary round held to narrow down the field of candidates. Only the top two candidates with the most votes move on to the Municipal Election, which is the final round determining the winner of the mayoral race. The Preliminary Election is held before the Municipal Election and allows voters to select from a larger pool of candidates before choosing between the final two contenders in the Municipal Election.

Ottawa Swans was created in 2006.

Depends for which municipality.

Municipal Mejillones was created in 2006.

Municipal Real Mamoré was created in 2006.