 The 12th district was in Southwestern Pennsylvania and included all of Beaver County and parts of Allegheny, Cambria, Lawrence, Somerset and Westmoreland counties.2014 Democratic nominee Erin McClelland announced that she would run again in 2016.Attorney and renewable energy business owner Steve Larchuk, who ran in 2004 in the 4th district on a healthcare platform in support of Universal Healthcare for the United States, also ran for the Democratic nomination.