FILE - In this March 10, 2014, file photo, Maine Gov. Paul LePage speaks during a news conference in Brunswick, Maine. LePage pledged to make his administration one of the most transparent in the state?s history when he ran for office. State officials admitted in a public hearing Friday, March 14, 2014, that the Maine?s Centers for Disease Control destroyed documents related to the selection criteria for distributing grants. LePage's political opponents say it contradicts his promise of open government, but LePage officials said it?s an isolated incident. (AP Photo/Robert F. Bukaty, File)

The Maine Republican Party adopted a new platform Friday, reaffirming its opposition to same-sex marriage even as the issue gains wider acceptance nationwide among conservatives.

State party officials adopted the platform Friday, as their convention kicked off, according to the Associated Press. The platform defines marriage as the union of one man and one woman. The 2012 platform had a similar definition of marriage.

Earlier this month, Nevada Republicans dropped opposition to same-sex marriage from their platform. The Indiana GOP did the same in 2012. This year, however, the Massachusetts Republican Party added same-sex marriage opposition back into its platform.

Opposition to same-sex marriage is also part of the national GOP platform, although the group Young Conservative for the Freedom to Marry has launched a campaign to remove that language.

The new Maine GOP platform, according to the AP, also urges the repeal of Common Core education standards. But it no longer calls for the Department of Education's elimination or refers to global warming as a "myth" as it did in 2010, when it catered to tea party activists.