State senator Don White, R-Indiana (PA) retiring in Feb
He's leaving at the end of February, so another special election is on tap in PA.
https://www.post-gazette.com/news/politics-state/2019/01/29/Pennsylvania-State-Senate-Don-White-Indiana-Armstrong-Butler-Westmoreland-retirement/stories/201901290119
Whites district includes parts of Armstrong, Butler, Indiana and and Westmoreland counties. Data from the Pennsylvania Department of State shows that Republicans have a roughly 25,000 lead in voter registration over Democrats in the district.
Whites resignation will leave three seats open in the chamber leaving Republicans with 26 seats, and Democrats with 21. Democrats gained a few seats in the Senate after a strong showing in the Philadelphia suburbs in the November election.
Earlier this month, Sen. Richard Alloway, a Republican from Franklin County, announced plans to retire effective Feb. 28.
One other seat, in the 37th Senate District, remains open because former state Sen. Guy Reschenthaler, a Republican from Allegheny County, was elected to Congress. A special election to replace him is scheduled for early April.
Did not realize there is a 3rd state senate seat open. If Dems should manage to sweep these seats - a long shot imho - but if they did, that would cut the GOP majority to 2 at 26-24 and 1 of those majority is Tommy Tomlinson who barely won re-election this past Nov in his Bucks county-based seat.