It is always an interesting issue. How should we and our leaders approach the issue of politics and faith? Here is a good video from Dr. Wayne Grudem on the issue.
It is worth it to get to know Dr. Grudem. He is a prominent evangelical theologian, seminary professor, and author, He co-founded the Council on Biblical Manhood and Womanhood and served as the general editor of the ESV Study Bible.
Wayne Grudem at the Watchmen on the Wall Conference in Washington DC, a conference for pastors and church leaders sponsored by the Family Research Council (June 21, 2015).