Sanders takes on Biden: 'There is no middle ground'

SAN FRANCISCO — Sen. Bernie Sanders took aim at former Vice President Joe Biden on the final day of the California Democratic Convention Sunday, repeatedly declaring that there can be “no middle ground” when it comes to Democratic primary politics.

“As you all know, there is a debate among presidential candidates who have spoken to you here in this room and those who have chosen for whatever reason not to be in this room,” the Vermont senator and socialist told the gathering in San Francisco to cheers from his supporters who swarmed the stage.