[2] Even- and odd-numbered district seats are contested in separate election years.

The president pro tempore of the Senate becomes the lieutenant governor of Pennsylvania in the event of the sitting lieutenant governor's removal, resignation or death.

In this case the president pro tempore and lieutenant governor would be the same person.

[4] President of the Senate: Austin Davis (D) President Pro Tempore of the Senate: Kim Ward (R) As of January 7, 2025: The Senate comprises 50 members who are elected by district.

In 2012, a State Senate district had an average population of 254,047 residents.