State Sen. Robert Jackson (S.D. 31) who represents much of the West Bronx and Northern Manhattan, has endorsed Izaiah Zeet Barrow, co-founder of the nonprofit, Theory 9, in his bid to become elected as district leader in Assembly District 81, which broadly covers Kingsbridge, Van Cortlandt Village, Norwood, Marble Hill, Spuyten Duyvil, Riverdale, Woodlawn and Wakefield. Barrow announced his candidacy in February, as reported.