Brennan has served on the council since 2014.
It also asked all non-essential workers to stay home.
Officials want to make sure students are counted.
The College Park City Council controversially passed a similar ordinance amid criticism in September.
The Diamondback breaks the process down.
Turnout dropped 2 percentage points since that election.
District 1's incumbent candidates ran uncontested.
Election day is Nov. 5.
The city has enlisted UMD students to help settle the dispute.