Fox News senior congressional correspondent Chad Pergram provides details on the 'push for new blood' within the Democratic Party as young hopefuls challenge seasoned incumbents. #FoxNews #Politics #Democrats #fox #news #trump Subscribe to Fox News! https://bit.ly/2vBUvAS Watch more Fox News Video: http://video.foxnews.com Watch Fox News Channel Live: http://www.foxnewsgo.com/ FOX News Channel (FNC) is a 24-hour all-encompassing news service delivering breaking news as well as political and