HARRISBURG — Partisan control of the Pennsylvania House of Representatives remained up in the air Thursday, two days after 101 Democrats and 100 Republicans were elected, leaving two races in swing districts still unresolved.

Both of the seats are held by Republicans in the General Assembly session that ends later this month. It may be weeks before county elections officials finish vote counting to determine winners.

Democratic leaders expressed confidence Wednesday they had wrested back majority control of the House for the first time in 12 years. But two of their successful re-election candidates also won races this week for Congress and lieutenant governor, while a third died in early October.

All three are from Allegheny County. Summer Lee, who won the race for the U.S. House 12th District also ran unopposed in her state House 34th District race. Austin Davis, the lieutenant governor-elect, ran unopposed in his state House 35th District race, and Anthony DeLuca, who died in early October but whose name was still on the ballot because they already had been printed, won his seat against Green Party candidate Queonia Livingston.