Should Christians be invloved in politics to the extreme?

The bible tells us to pray for our politicians, and we should vote because it is our right to do so as citizens- but is that where it should stop?. Should pastors talk devisive politics?, should they openly endorse a particular candidate?, should we as Christians get too caught up in the whole process, meaning being too emotional?, being angry at one another because of our political views?,- not being open to discuss it without a issue?, or should we just  pray, vote, and trust in God?.