Question: Who votes in pa special election march 13?
Disambiguated questions and answers: question: Which counties voted in the PA special election in March 18, 2018?
Who voted in the PA special election on March 13, 2018?
answer: Allegheny, Greene, Washington, Westmoreland
Pennsylvania 's 18th congressional district
Natural Questions answer: Pennsylvania 's 18th congressional district (from the Wikipedia article "Pennsylvania's 18th congressional district special election, 2018")