Governor Walker talks about his firm stance against same-sex marriage on FOX News

WASHINGTON -- Even though he has yet to announce his presidential candidacy, Governor Scott Walker is heating things up on the campaign trail -- even leading his potential Republican challengers in a new poll of primary voters in Iowa. But Walker is also making headlines for his firm stance on same-sex marriage -- telling FOX Business' Maria Bartiromo on "Sunday Morning Futures" Sunday, May 31st even though he attended a same-sex wedding reception, he still believes "marriage is between a man and a woman."

"I still believe marriage is between a man and a woman. I voted for that and defend it in our state. I had a family member on my wife's side, one of our great cousins that we love, and we went there even though we have a belief of what legally constitutes marriage. We were there because we love her. We love her and we love the whole family. So of course we're going to be there," Walker said.

As for his early lead in a crowded field of candidates, Governor Walker is attributing that to his openness and honesty about his views -- however unpopular they may be, adding that voters care more about his plans "to lead America forward."

"It's really not going to be an issue in the next presidential election. I think even if people disagree with me, even if some people have changed in that regard, people deserve to know what my opinion is on that. The same way I'm pro-life. In the end, what they want to know is what are you going to do to lead America forward, not to pit one group of Americans versus another. I think we got a pretty good story to tell," Walker said.

As of right now, eight Republicans have officially entered the presidential race -- including retired neurosurgeon Ben Carson, Florida Senator Marco Rubio and the only woman - former Hewlett-Packard CEO Carly Fiorina.

Three Democrats have stepped forward: front-runner Hillary Clincon, former Maryland Governor Martin O'Malley and Vermont Senator Bernie Sanders who is an independent but has chosen to run as a Democrat.

Walker has said any decision on 2016 will be made after the state's budget is signed.

This week, Walker will travel to Georgia and Florida. On Monday, June 1st, Walker will meet with local elected officials, party leaders and activists in Atlanta. From Georgia, Walker will travel to Orlando, Florida to participate as a speaker in Governor Rick Scott’s Economic Growth Summit on Tuesday.