Colorado voter registration dramatically increased on September 10, the day of the presidential debate and Taylor Swift's social media post afterward endorsing Vice President Kamala Harris, according to the Secretary of State's Office.The office says nearly 4,500 Coloradans registered or updated their voter registration online that day. In the two days following, nearly 1,700 people signed in to register or update their information.Prior to that, state officials say they only saw an average of 1,600 voter registrations and updates a day. As of Thursday, nearly four million Coloradans are registered to vote. If you still need to register, visit the Colorado Secretary of State's website._______Watch KOAA News5 on your time, anytime with our free streaming app available for your Roku, FireTV, AppleTV and Android TV. Just search KOAA News5, download and start watching.