Incumbent Jim Bock is completing his first six-year term as supervisor and previously was a Pennsylvania State Police trooper.
Lou Aliota filed a petition for the Republican nomination but has since withdrawn from the race, according to the Erie County elections and voting office. A pharmacist consultant and former Millcreek Township school director, Aliota is seeking a Republican nomination for Millcreek Township school director and for Erie County Council District 1.
Samuel Comfort, an educational administrator, is the only candidate for the Democratic nomination for Millcreek supervisor.
In Summit Township, incumbent Tony Davis and Mark Sleppy are seeking the Republican nomination for supervisor.
Davis is the township's director of parks and recreation and maintenance.
Sleppy lists his occupation as FTA Erie/shipping clerk.
No Democrats are running.
More townships with contested races for nomination
There are two candidates for the Democratic nomination for Lawrence Park Township commissioner.
The contenders are incumbent Joseph Golden and Sarah Trojak, an entrepreneur.
Two Republicans are running for Franklin Township supervisor, incumbent James Sachar and Ernest Robinson, the township's assistant roadmaster. No Democrats have filed to run.
In Greene Township, incumbent John Bartnicki and Shawn Matson, a bakery manager, are seeking the Democratic nomination for supervisor. Krista Arnold, a code enforcement officer, is the only Republican candidate.
The only other contested race will be in McKean Township, between Republicans Brian Cooper, an incumbent, and Crystal Arlington, who lists her profession as president and CEO. No Democrats are running.
In Fairview and Harborcreek, longtime incumbents are unopposed
Republican Dean Pepicello is unopposed for his party's nomination for Harborcreek Township supervisor. Pepicello is seeking his fourth six-year term.
In Fairview Township, Republican Pete Kraus is also unopposed for nomination. Kraus has been a Fairview supervisor since 1994.
No Democrats filed to run for supervisor in either township.
Here's who's running in other townships
Republican: Anne Majewski, accountant and administrative assistant.