A still-incarcerated convicted murderer made history in the nation’s capital when voters recently elected him to one of the District of Columbia’s Advisory Neighborhood Commissions, which advise the local government on neighborhood issues such as police protection, parking, zoning, liquor licenses, and trash collection. Joel Caston, 44, has been imprisoned for 26 years after a jury convicted him of first-degree murder in the Aug. 14, 1994, ambush slaying of Rafiq Washington, 18. He is expected to be released from the D.C. Central Detention Facility either this or next year. Getting elected while behind bars is difficult but not impossible. Originally a Democrat, Joseph D. Morrissey was reelected as an independent candidate to the Virginia House of Delegates in January 2015 the month after he was sentenced to six months in jail on a misdemeanor charge for contributing to the delinquency of a minor. Morrissey is now a member of the …