finally had her first democratic challenger. it's no surprise that former rhode island governor and senator lincoln chafee is exploring a run for the democratic nomination. what was surprising is the way he appeared to declare candidacy during an interview on cnn. take a look. >> you were criticizesing her saying that a vote that she took in the senate when you were in the senate is essentially disqualifying for the democratic nomination. >> yes that's why i'm running because i feel strongly about where we're going as a country. >> his staff says that he -- lincoln chafee's staff says he's not filed paperwork. if he, does he would be hillary clinton's first officially declared opponent for that nomination. joining me by phone, former governor lincoln chafee. sir, it's great to have you with me. let's settle this once and for all. are you in or out? >> i fully expect to be in, but at this stage, i do have an exploratory committee. that allows me to put together