argue with your preferred opponent

We live in a world where almost all media is good media. And where elections tend to go back and forth between parties, so if you are a liberal/conservative who cares about your country, you can't just hope that your side will win all the time, you have to influence the conservatives/liberals to improve. The best way to do that is to move attention away from the worst examples of the other side, and focus on people who see the world differently than you do, but who have integrity. And yes, go ahead and argue with them. Stop seeking out the crazy and the paper tigers, and find the smartest and highest integrity opponents you can. If you argue with them, it turns them into the defenders for their side.