Thirty-one percent of U.S. Republicans favor a new nuclear deal with Iran, creating a challenge for their party's lawmakers who largely oppose the framework accord sealed between Tehran and world powers, a Reuters/Ipsos poll showed on Wednesday.
Another 30 percent of Republicans oppose the pact, while 40 percent are not sure, according to the poll, which revealed a sharp split in the party as its leaders ramp up opposition to the deal championed by President Barack Obama, a Democrat.