Robert Croslin, Danny Schaible and Vish Bhatt will be running in the June 7 election, which was scheduled after former Mayor Kevin Ward's death in January.
All other incumbents kept their seats on the council.
The preliminary votes are from people who voted in-person Sunday.
The College Park City Council unanimously terminated Natasha Hampton before she was scheduled to begin her role on June 1.
The ordinance would allow the council to change the election's date and deadlines for individuals to file and withdraw their candidacy.
City officials anticipate moving in August 2021.
The list included 25 state and local lawmakers.
Turnout dropped 2 percentage points since that election.
He received more than five times the number of votes the second-place finisher did.
Incumbent mayoral candidate Patrick Wojahn beat his nearest competitor by over $13,000.