American voters' feelings on Israel and the Palestinian territories have shifted dramatically in recent years, in a sea change that is transforming the Democratic Party.

A new NBC News poll underscores the depths of the shift. More registered voters view Israel negatively than positively, a change from a few years ago. The change has been especially pronounced among independents and Democrats, fueling divided congressional primaries in 2026 and potentially shaping the party's 2028 presidential contest.