Among Republicans aged 18 to 49, that figure rises to 57 percent, while one in four Republicans aged 50 and older hold a negative view.
A Quinnipiac University poll this month found that one in five Republicans said the US is too supportive of Israel — three times the level recorded after October 7.
A University of Maryland Critical Issues poll also showed that less than half of Republicans, 46 percent, believed Israel’s genocide in Gaza was justified as “self-defence”.
Among Republicans aged 18 to 34, only 22 percent backed Israel’s actions and war.
The backlash has been fuelled by high-profile “America First” anti-interventionist voices, including Tucker Carlson, Megyn Kelly and former Republican Rep. Marjorie Taylor Greene, who have criticised US support for Israel.
US Vice President JD Vance also criticised Israeli officials who opposed the Iran deal.
“If I was in the Cabinet of the Israeli government, I might not be attacking the only powerful ally that I have anywhere left in the entire world,” he said.
