Actor Dean Cain says he hopes an upcoming God's Not Dead film that spotlights the intersection of faith and politics will motivate Christians to vote this November. The actor known for his roles in Lois & Clark and Supergirl has a role in God's Not Dead: In God We Trust, which opens in theaters Sept. 12 and follows the story of a pastor, David Hill, who runs for U.S. Senate against an opponent who is trying to remove religion from the public square. Despite facing attack ads, Hill resists the pressure to "go negative" himself.

The movie highlights key issues without referencing current politicians or either of the two major political parties.

"There's up to 40 million Christians in this country who do not vote," Cain told Crosswalk Headlines. The film cites this statistic and notes that millions of Christians are not even registered. "... What I would really love to see is, I'd like to see those 40 million Christians who don't vote in every election vote."

"Get involved," Cain said. "You may not be interested in politics, but politics are interested in you.

"I think that if those 40 million came out and voted -- [even] if 20 million came out and voted, that changes everything. And I think we [then] go to a place that makes a lot more sense as a country and as a world, and I think it's of the utmost importance. That wasn't my idea when we started doing the movie, but now that we've done the film, and it's so timely."

Cain's frustration with political leaders, he said, is the reason he chose to relocate.

"It's the reason I left California. I now live in Nevada because the politics of California have gotten out of control," Cain said. "The taxing has gotten out of control. The regulations are out of control, the things they're doing with kids and all that stuff is just completely out of control. And I didn't want to be part of it anymore. So, I live in a state that doesn't have state income taxes. [I am in a] smaller community out here in a very safe, wonderful spot."

In God's Not Dead: In God We Trust, Cain portrays a character, Marc Shelley, who was first seen in the original God's Not Dead (2014). Shelley provides financial backing for Hill, but his motives are far from pure.

"He was the only character in the first God's Not Dead, I think, who had no redemptive qualities," Cain said, laughing.