One-time rivals appeared at a N.H. high school
Dems, Republicans must unite to deny him White House
More than 12,000 people have signed petition for change
2016 hopeful wants to 'take that energy' of his campaign to Philadelphia
Gay candidate finishes third in at-large Council race
Clinton calls for defeating terrorism, restrictions on gun access
Bernie supporters holding on until the convention
2016 hopeful recognizes being first woman Democratic nominee as 'milestone'
Candidate becomes first woman to obtain major U.S. party nomination
Polls indicate candidate could pull off upset victory in Golden State
