About 63% of US citizens said rising gasoline prices hurt their household finances, up from 55% in a March poll, according to a Reuters/Ipsos poll published Monday.
Reuters/Ipsos collected responses online from 1,254 US adults nationwide between May 8 and May 11.
Among Republicans, 51% said higher gasoline prices affected their finances, compared with 74% Democrats.
Over two months after US and Israeli strikes began on Feb. 28, the Iran conflict continued to raise concerns over energy markets and rising fuel costs, the poll showed.
After Iran disrupted nearly one-fifth of global oil flows through the Strait of Hormuz, the conflict lifted US gasoline prices by roughly 50%, Reuters reported.
Ahead of the November midterm elections, Republicans face mounting pressure as 65% of respondents held Republicans responsible for higher fuel prices, while 27% said it was because of the Democrats.
About 80% of Americans expect gasoline prices to rise further, while nearly 28% said they may delay, shorten or cancel summer travel plans if prices stay elevated.
Trump began his second term in January 2025, campaigning to lower costs for US consumers.
A total of 66% respondents said Trump had not clearly explained US military involvement in Iran.