I don't know the source of your poll well, but I don't dispute it. Note what the article said though, re American Jews.
August 2002 to February 2003 found 52 percent of Jews in favor of military action, 32 percent opposed and 16 percent uncertain; among all Americans, the polling found 62 percent in favor, 28 percent opposed and 10 percent uncertain.
IMO, that 52 vs 62 differential (though the result must break Pat's heart) is largly the result of todays dem/rep ideology which to the discredit of the dems equates to anti/pro war, the dems don't seem able to support Americas actions and, legitimately, bash GWB to their heart's content on domestic issues. It's not about Israel.