(CNN) - Tuesday will serve as Boston Mayor Thomas Menino's first test in his bid for a record-setting fifth term in the city's top post.
Menino, who has served as mayor of Boston since 1993, is facing his toughest re-election bid yet this year as his three opponents have campaigned on a need for fresh blood, and questions swirl over why an aide to Menino erased months of e-mails in a possible violation of public records law.
Menino is facing challenges from members of the Boston City Council, Michael Flaherty and Sam Yoon, along with Boston developer Kevin McCrea, all Democrats. But the three challengers lack the name recognition of the ubiquitous Menino, and it's believed the longtime mayor - affectionately nicknamed "Mumbles" because of his thick Boston accent - still holds the clear advantage.
The top two vote-getters in Tuesday's election will face off on November 3.