You cannot be a registered non-profit, and work on behalf of a political party. It's the ******* law, and it is especially important that churches avoid politics. If they don't, they risk losing their tax exempt status. You should try reading the laws for non-profits:
In return for its favored tax-status, a 501(c)(3) charitable nonprofit, foundation, or religious organization promises the federal government that it will not engage in “political campaign activity.”
www.councilofnonprofits.org
As a card carrying Christian, I find Republicans to be the LAST party I would ever vote for. Their beliefs on gays, women, and minorities are the very antithesis of Jesus' teachings. Jesus preached against the pursuit of money, and said to be his follower you had to sell everything you own and give the money to the poor.
But mostly, I remember those who begged Jesus to get involved in the fight against the Romans, Jesus said that his Kingdom is not of this world and that we should render under Caesar that which is Caesar's.