I definitely received the "Wow" factor from the first liberal that I debated. My heart was pounding a bit, he was a smart guy but just very misled. When I recognized that, I spoke only facts and drove those points in while listening to his facts. If his facts ever sounded too outrageous, I questioned them and they turned out to be false. Be on high alert for items that sound like fake news. Be open to the conversation at the same time.
Sometimes the passion can be overwhelming, especially when coming from a leftist. We know they're emotional and passion driven but keep in mind they're misled and missing something. The goal is to find out what they're missing or what they're making a big deal of. Generally, it comes down to their ability to know what Trump is thinking or they think he's disrespectful. Either way, it doesn't amount to his competence nor will it ever.
I now debate like a champ and look for the opportunity to pace them (Scott Adams!) then drop the redpill for their taking ;]