ECONOMICAL 'IN TRANSIT' SEEKS BOOST FROM CLINTON ENDORSEMENT
 In Transit, the low-grossing new musical that Bill and Hillary Clinton saw Wednesday night, is losing less money than you might think. As Broadway’s first acapella musical, it doesn’t employ musicians, besides 11 hardworking onstage actor-vocalists, including one who does percussion. (Steven “HeaveN” Cantor and Chesney Snow alternate in the role of “Boxman.”) …