Dominic F. Pileggi is an American politician and judge from Pennsylvania who served as Republican mayor of Chester, Pennsylvania from 1999 to 2002 and as a member of the Pennsylvania 9th Senatorial district from 2002 until January 2016. He was elected judge in the Pennsylvania Court of Common Pleas, Delaware County in 2015.

The 2012 elections for the Pennsylvania State Senate were held on November 6, 2012, with all odd-numbered districts being contested. The primary elections were held on April 24, 2012. The term of office for those elected in 2012 began when the Senate convened in January 2013. Pennsylvania State Senators are elected to four-year terms, with 25 of the 50 seats contested every two years.