Fred Sainz, spokesman for the gay advocacy group Human Rights Campaign, said that “the days of making gay a wedge issue are dated.”

“I think they are outliers,” he said of Jindal, Cruz and Palin, adding that he believes they jumped into the “Duck Dynasty” controversy to appeal to “a niche base.”

But that base remains a powerful force in the Republican Party, particularly when it comes to presidential primaries in states such as Iowa and South Carolina.

Conservative activists said that the national push for gay rights could mobilize evangelical voters to the polls in new numbers in 2016, particularly if they feel there is a candidate running who reflects their beliefs.

David Lane, an influential Christian activist based in California who organizes pastor conferences, said he got an e-mail Thursday morning from a top Republican activist in Iowa who credited Jindal for speaking out quickly about Robertson’s suspension.

“What Jindal is doing is absolutely tremendous, from an evangelical and pro-life Catholic standpoint,” Lane said. “Spiritually speaking, we’re in a war.”