Robert F. Kennedy Jr. did gain access to the ballot in Michigan, and a Boston University professor says the third-party candidate could swing the key battleground state against Joe Biden. Subscribe to WCVB on YouTube now for more: http://bit.ly/1e8lAMZ Get more Boston news: http://www.wcvb.com Like us: https://www.facebook.com/wcvb5 Follow us: https://twitter.com/WCVB Instagram: https://www.instagram.com/wcvb5/