A lackluster turnout of Jewish Democrats would hurt Obama badly. And even a low double digit defection of Jewish Democrats to McCain in the absolute must win swing states of Florida and Pennsylvania would spell disaster or worse for Obama. The weakness and danger is real. A May Gallup Poll found that while Obama got the majority of Jewish votes he still did far worse poll wise than John Kerry did in the 2004 presidential election among Jewish voters. And, of course, he got far fewer Jewish votes than Clinton in the primaries.