According to the Inquirer Costello said he has filed to remove his name from the ballot. The deadline to remove his name from the ballot is Tuesday.
Costello’s decision leaves tax attorney Greg McCauley as the only Republican on the ballot for the May primary.
The announcement likely sets up the general election match up with Chrissy Houlahan the only Democrat to file in the race.
Costello had reportedly been considering remaining on the ballot through the primary.
Costello’s announcement to retire the Cook Political Report and Inside Elections both shifted the race from ‘toss up’ to ‘likely Democrat.’