Members of Dorchester’s Ward 15 Democratic Committee earlier this month threw their support behind Ruthzee Louijeune, a former aide to Sen. Elizabeth Warren, and David Halbert, a former aide in Gov. Deval Patrick’s administration.

No other at-large candidates received the two-thirds majority of voting members, who reside in Bowdoin-Geneva and Meetinghouse Hill. Two incumbents are running for re-election: Michael Flaherty of South Boston and Julia Mejia.

Seventeen candidates are on the Sept. 14 ballot. Eight finalists will emerge from that contest for the Nov. 2 general election.

The number of candidates is driven by City Councillors At-Large Annissa Essaibi George and Michelle Wu opting to run for mayor instead of another term on the 13-member City Council.

Ward 15 members considered mayoral endorsements, but no candidate met the two-thirds criteria. The committee also didn’t endorse in the District 4 race to succeed Councillor Andrea Campbell, who is also running for mayor.

“Due to this high bar and the high quality of candidates, many decisions for endorsements have been put off until after the preliminary election in September,” Edward Cook, co-chair, said in a statement about the July 17 endorsement meeting.

“A consideration of adding endorsements will take place at our September 18 monthly meeting along with interviews for D3 candidates,” he said, in reference to the District 3 race. Incumbent Frank Baker is facing off against newcomer Stephen McBride.