There have been 8 special elections in Pennsylvania in the past year.

Some Allegheny County voters will return to the polls in April to fill the state Senate seat vacated by U.S. Congressman Guy Reschenthaler.

Soon-to-be-former Pennsylvania Lieutenant Gov. Mike Stack tweeted Friday afternoon that he had asked the Senate Secretary “to draft a writ setting the Special Election to fill the vacant 37th Senate District seat for April 2, 2019.” Stack said counties will be served the writ on Monday.

The 37th district encompasses parts of Allegheny County including Bethel Park, Moon Township, Mt. Lebanon, and Sewickley, as well as Peters Township in Washington County. Reschenthaler, a Republican who won the race to represent Pennsylvania’s new 14th Congressional District on Nov. 6, represented the district for three years.

Pennsylvania’s lieutenant governor is the presiding officer of the state Senate and calls special elections to fill vacant seats in that chamber.

Department of State spokesperson Wanda Murren previously said a writ of election “must be issued within 10 days of the date the vacancy occurs.” Reschenthaler submitted his resignation Monday, Stack’s office confirmed by email.

“The special election can be held no less than 60 days from the time the writ is issued,” Murren added.

Reschenthaler was sworn in as congressman in Washington, D.C. on Thursday. The special election for his former seat is just the latest in a raft of special elections seen in Pennsylvania over the past year. The Department of State counted eight in 2018.

As for who will be running for Reschenthaler’s former seat, the Post-Gazette said it might be easier to list those who won’t be.