A large share of Republicans are refusing to accept a Supreme Court ruling striking down gay marriage bans in all 50 states.

According to a USA TODAY/Suffolk University telephone poll of 1,000 adults conducted July 9-12, 49 percent of Republicans say the issue is not settled and want local officials to take steps to block gay couples from marrying.

Overall, a majority (51%) of Americans say local and state officials should allow gay couples to marry even if they oppose such unions. Thirty-eight percent of Republicans also agree.

Gay couples have faced pockets of resistance in the 13 states affected by the ruling. A Kentucky clerk who has vowed never to issue marriage licenses to gay couples is facing a lawsuit.

(Related: Delay in case against Kentucky clerk refusing to issue marriage licenses to gay couples.)

Four in 10 respondents said that the issue will have no impact on who they vote for next year for president.