Elizabeth Warren's campaign may be on its last legs.<br />A Franklin Pierce University/Boston Herald/NBC10 poll shows her in third, with Amy Klobuchar rising.<br />A fourth or fifth place finish would be devastating for Warren and could cause her campaign to implode.<br />Warren is vowing to fight on in other states.<br />It's hard to see how she would regain her momentum.<br />She’s trailing by a wide margin in Nevada and South Carolina.<br />The Boston Herald reports that Warren isn't even a lock to win her own state of Massachusetts.
