SAN DIEGO (KGTV) — The long, and at times contentious, battle to fill the vacant seat on the San Diego County Board of Supervisors is over: Imperial Beach Mayor Paloma Aguirre has defeated Chula Vista Mayor John McCann, securing the balance of power on the board for the Democrats.

Aguirre is expected to be sworn in to the San Diego County Board of Supervisors by late July following a strong election night lead.

Imperial Beach Mayor Paloma Aguirre has won the race for South County supervisor, re-cementing a Democratic majority on the Board of Supervisors six months after the surprise departure of Nora Vargas.