Centre-left coalition On 7 December 2020, the incumbent mayor
Giuseppe Sala announced that he had chosen to run for re-election in 2021 for a second term in office. Sala announced that he would present his electoral program and the lists of his coalition before the end of January, ruling out a possible alliance with the
Five Star Movement (M5S). Sala also sought a reconciliation with
Green Europe after the rupture following the cutting of the trees in the Bassini Park to make way for a new department of chemistry for the
Politecnico di Milano. Spokeswoman Elena Grandi initially announced an autonomous candidacy with its own candidate for mayor, but ultimately they had a meeting with the outgoing mayor to discuss their support for his candidacy. On 12 March 2021 Sala joined the
European Green Party. ==Parties and candidates==