Mysterious blue dots are popping up on lawns across key battleground state. Here’s what they mean

Blue dot yard signs are emerging in lawns throughout Nebraska as a show of support for Democrats. CNN's Jeff Zeleny reports. #CNN #News Want to stay up to date on the day’s top stories? Sign up for CNN’s 5 Things newsletter, and we’ll give you the 5 biggest stories you need to know, videos people are watching, and more! Sign up here: https://www.cnn.com/newsletters/5-things?source=nl-acq_social_youtubedesc&utm_source=nl-acq_social_youtubedesc