Columnist Alan Abramowitz says er, not likely:
According to data from the American National Election Studies, Jewish voters are only exceeded by African Americans in their attachment to the Democratic Party. Between 1992 and 2008, 82% of Jewish voters who were interviewed in ANES surveys identified with or leaned toward the Democratic Party. In contrast, among all other white voters during these years, only 43% identified with or leaned toward the Democratic Party.
What explains the continuing support of Jewish voters for the Democratic Party? After all, Democratic identification has declined fairly dramatically among some other traditionally Democratic groups such as white southerners and Catholics in recent years. The key difference appears to be that Jewish voters, unlike these other traditionally Democratic voting groups, hold solidly liberal views on a wide range of domestic policy issues, and especially on social issues such as abortion that have undermined support for the Democratic Party among some of its traditional supporters. ...
The continued liberalism of Jewish voters on domestic policy issues, and especially on social issues such as abortion, remains a major obstacle to Republican inroads. In fact, the rightward drift of the GOP in recent years has probably made any such shift of Jewish voters into the Republican camp even less likely.