Schroeder is challenging incumbent State Rep. Ken Dunkin (D-Chicago) in the February 2 primary.
“Today someone filed objections to my petition signatures on behalf of my opponent Ken Dunkin,” Schroeder wrote in a statement. “Ken has repeatedly made it clear throughout his political career that he is not interested in letting the voters have their say on Election Day.”
Schroeder filed four times the number of signatures legally required for the race.
“Ken has a history of running nasty campaigns, including trying to get his opponents knocked off the ballot instead of competing with them in an honest election,” Schroeder said.
Drawn out petition challenges can chew up valuable campaign cash and time, undermining a challenger’s ability to knock off an incumbent.