Dems Win but Biden Trails
b'It was a big week in US politics as voters in some states took to the polls. What do the results mean for Democrats and Republicans? Meanwhile in Miami, five Republican presidential candidates took to the debate stage while the frontrunner held a rally nearby. Do any of them have a shot at beating former president Donald Trump? Washington Post Chief Correspondent Dan Balz joins CNN Political Director David Chalian to talk about the week\\u2019s big events, plus some renewed Democratic concerns about President Joe Biden seeking a second term.\\nLearn more about your ad choices. Visit megaphone.fm/adchoices'