The seal of the state of Georgia hangs behind Gov. Nathan Deal as he speaks during a press conference to announce he has vetoed legislation allowing clergy to refuse performing gay marriage and protecting people who refuse to attend the ceremonies Monday, March 28, 2016, in Atlanta. The Republican rejected the bill on Monday, saying, "I do not think that we have to discriminate against anyone to protect the faith-based community in Georgia." Photo: AP Photo/David Goldman

The seal of the state of Georgia hangs behind Gov. Nathan Deal as he speaks during a press conference to announce he has vetoed legislation allowing clergy to refuse performing gay marriage and protecting people who refuse to attend the ceremonies Monday, March 28, 2016, in Atlanta. The Republican rejected the bill on Monday, saying, "I do not think that we have to discriminate against anyone to protect the faith-based community in Georgia." Photo: AP Photo/David Goldman

ATLANTA — Conservative groups accused Georgia Gov. Nathan Deal of turning his back on people of faith by vetoing a “religious freedom” bill and vowed Tuesday to keep up the fight for years to come.

“This is only the beginning,” said Virginia Galloway, who represents the Faith and Freedom Coalition in Georgia.

The bill enumerated actions that “people of faith” would not have to perform for others: Clergy could refuse to marry same-sex couples; church-affiliated religious groups could invoke faith as a reason to refuse to serve or hire someone. People claiming their religious freedoms have been burdened by state or local laws could force governments to prove a “compelling” state interest overriding their beliefs.

More than 500 companies joined a coalition led by Coca-Cola and other big-name Georgia firms urging Deal’s veto. The Walt Disney Co., Marvel Studios and Salesforce.com threatened to take business elsewhere. The NFL suggested Atlanta could lose its bids for the 2019 or 2020 Super Bowl.

“I thought that was very disappointing to see Governor Deal in Georgia side with leftist activists and side against religious liberty,” Republican presidential candidate Ted Cruz said Monday while campaigning in Altoona, Wisconsin.

President Barack Obama, for his part, was never under the impression that last year’s Supreme Court decision legalizing gay marriage would lay to rest the struggle for equality, justice and fairness, White House spokesman Josh Earnest said.

“That struggle goes on,” Earnest told reporters accompanying Obama on Tuesday to an unrelated appearance in Atlanta.

“The president comes down on the side of fairness and equality and opposing discrimination in all its forms every time,” Earnest said. “It’s the president’s strong view that we can take all the necessary steps to protect religious freedom without giving people the approval to discriminate against people because of who they love.”

It remains to be seen whether GOP leaders can gather three-fifths majorities in both houses to request a special session. Even then, with 11 Republicans and all Democrats voting against the bill, they may lack the two-thirds votes needed to override Deal’s veto. Action may have to wait until the legislature returns in January.

Sen. Marty Harbin, a Tyrone Republican, said supporters will “work until there’s a change in governor if that’s what we have to do.”

Republican Lt. Gov. Casey Cagle, a top candidate for the GOP governor’s race in 2018, said the vetoed bill struck “the right balance.”