Leanne Krueger-Braneky will be the official Democrat in the 161st District special election to fill the Pennsylvania State House seat vacated April 30 by Republican Joe Hackett.
Hackett quit the legislature saying he wanted to return to law enforcement.
The election is Aug. 4.
She will face Lisa Esler, a popular Penn Delco School Board member who is running a write-in campaign, and Delaware County AFL-CIO President Paul Mullen who the county Republican leaders placed on the R side of the ballot.
Mullen has been a strong campaigner for Democrats in recent state and national elections.
Ms. Krueger-Braneky, a Swarthmore resident, lost to Hackett last fall by 2,696 votes.