Vincent A. "Buddy" Cianci Jr. was declared the city's next mayor Tuesday, but opponents continued to fight his election on grounds his felony conviction renders him ineligible to hold office.

Attorney Frederick Cass challenged Cianci's election victory. Cass and about 15 others argued Cianci, a former mayor, should be barred from office under a 1986 amendment to the state constitution. The amendment prohibits convicted felons from holding office until three years after the conclusion of their sentence and probation.Cianci pleaded no contest on April 24, 1984, to assaulting a man he thought was having an affair with his estranged wife. In Rhode Island, a no contest plea is recorded as a conviction.

Cianci received a five-year suspended sentence, but the felony forced him from the mayor's office in 1984 after 10 years.