 This created speculation that if state Republican leaders, as had Castor, recognized the un-electibility of the incumbent, the GOP would have had a chance to hold the office with Castor or another Republican candidate.After serving in the office since 1985, Castor was twice elected district attorney for Montgomery County, in which he is a lifelong resident, assuming office in January 2000.After his second term ended, he was succeeded by Risa Vetri Ferman.