The 8th District consists of the Butler County townships of Brady, Center, Cherry, Clay, Franklin, Marion, Mercer, Muddycreek and Worth, and the boroughs of Harrisville, Portersville, West Liberty and West Sunbury; and the Mercer County townships of Coolspring, Deer Creek, Fairview, Findley, French Creek, Jackson, Lake, Liberty, Mill Creek, New Vernon, Perry, Pine, Sandy Creek, Sandy Lake, Springfield, Wolf Creek and Worth and the boroughs of Fredonia, Grove City, Jackson Center, Mercer, New Lebanon, Sandy Lake, Sheakleyville and Stoneboro.
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