Hollywood actor Mark Ruffalo has withdrawn his support for Brazil presidential candidate Marina Silva.

In a 2-minute video posted last month, Ruffalo praised Silva's candidacy as a “great gift to Brazil and the world.”

“I think it would be a great gift to Brazil and the world to see someone with so much understanding of human struggle, of the importance and treasure of the environment and a forward looking understanding of how the economy, the environment and social economic justice are all places that need to come together in a wholesome system,” Ruffalo said in the video.

On August 13, Silva, a prominent environmentalist and politician, went from vice presidential candidate to presidential candidate after the Socialist Party candidate Eduardo Campos died in a plane crash and she was selected to take his place.

Silva, a Pentecostal Christian in the Assemblies of God, renounced the party's support for marriage equality, which Campos had endorsed, on August 30, saying she supports civil unions for gay couples.

In a blog post, Ruffalo said he only recently learned of the candidate's position on the issue.

“It has come to my attention that the Brazilian Candidate for President, Marina Silva, may be against gay marriage,” Ruffalo wrote. “That would put me in direct conflict with her. As you know I have fought for marriage equality in my country and see it as a reflection of the quality of a candidate. I did not know this was her stand on this issue when I made the video supporting her. I only saw her debate where she said she supported gay marriage and have come to find out after the fact that her party has pulled her support of this issue. I can not, in good conscience, support a candidate who takes a hard right approach to issues such as Gay Marriage and Reproductive rights even if that candidate is willing to do the right thing on environmental issues.”

“I can say that Women's Rights, Gay Rights and Environmental Rights are all part in parcel to a kind of world view that I ascribe to,” he said.

Ruffalo also apologized for “not doing a better job of vetting this decision.”