MODESTO — Bernie Sanders has to win California if he’s to have any chance of getting the Democratic nomination for the Presidency at the party’s convention in Philadelphia next month. And on Thursday morning at Modesto Centre Plaza, the outspoken Vermont Senator promised that he was going to do just that. In the last month Sanders has made 28 appearances at California rallies to drum up grassroots support for his campaign against the well-funded Hillary Clinton – not pulling any punches in the process.