Rick Santorum supporter Bill Dore previously backed the campaign of Democrat Jared Polis, an openly gay congressman from Colorado.

Dore's $1.5 million contribution to the Red, White and Blue Fund, which is backing Santorum's bid for the White House, has helped keep the campaign alive.

According to an NPR profile, Dore made his millions in oil and gas. Last year, a French company bought his company – Global Industries – which specializes in building offshore pipelines.

In a video on the Horatio Alger Association website, the Louisiana businessman said an illiterate and abusive father made for a rough childhood.

“My father suffered from attention-deficit-hyperactive disorder, as I learned later in life when I was diagnosed,” he said. “And it was hard for me to understand why he would leave jobs; going from one to the next.”

Dore's backing of a Republican conservative who is best known for speaking out against gay rights is difficult to reconcile with his 2008 $28,000 contribution to the Democratic Senatorial Campaign Committee. Polis also received $4,000 from Dore that same year.

Speaking to NPR, Lake Charles Mayor Randy Roach said Dore is not motivated by politics.

“I would say it probably doesn't matter to him what other people in the political spectrum may think, because he's going to do what he wants to do and he's going to do it because he sincerely believes it's the right thing to do,” said Roach, a Democrat.