Republicans reiterate they won't vote on his nomination
Five states up for grabs on major primary night
2016 hopeful drops out after dismal showing in Fla.
Five states up for grabs on 'Mini-Tuesday'
Was she reaching out to conservative voters?
More reaction, fallout after controversial remarks
2016 hopeful praised for LGBT record as senator and secretary of state
2016 hopeful issues plan to assist 1.2 million Americans with disease
2016 hopeful outlines path for achieving 'AIDS-free generation'
'Having a Democrat in the White House is the imperative'