Updated 12:05 AM | Jul. 28, 2016What Went Down On Day Three Of The Democratic ConventionBy FiveThirtyEightFiled under 2016 Election Carl Bialik 8:34 pm This video is a reminder that even if some prominent Republicans such as Marco Rubio eventually came around to endorsing Trump, their previous remarks doubting his fitness to be president remain on video, available for Democrats to try to exploit. × The best of FiveThirtyEight, delivered to you. Thanks for subscribing!You should receive a confirmation in your inbox shortly. Error: {{data}}. Email Address Morning Distribution (Daily) Your daily briefing from FiveThirtyEight. Top Stories Newsletter (Weekly) FiveThirtyEight’s top stories last week. Politics Newsletter (Weekly) FiveThirtyEight’s top politics stories last week. Popular Stories Why Trump Is Polling Much Better Among Very Conservative Primary Voters Than In 2016 Are Black And Hispanic Americans Abandoning Biden? The 2024 Republican Primary Is Heating Up. Time For Another FiveThirtyEight Primary Draft!