John Wesley’s 250 Year Old Advice On How Christians Should Vote:

“October 6, 1774
I met those of our society who had votes in the ensuing election, and advised them

  1. To vote, without fee or reward, for the person they judged most worthy
  2. To speak no evil of the person they voted against, and
  3. To take care their spirits were not sharpened against those that voted on the other side.”

― John Wesley, The Journal of John Wesley

On number 2: realize we’re all sinners. You’re voting for a sinner, and you’re voting against a sinner. And on number 3: we’re all made in the image of God. Don’t let politics put up a wall against connecting with other people.

I think it’s legitimate to criticize policies and actions, but one should refrain from attacking the person. And even the criticisms should be done in a Christian manner.