Monmouth: California finds Bernie Sanders leading the Democratic primary race with 23%, followed by Joe Biden at 17%, Mike Bloomberg at 13%, Elizabeth Warren at 10%, Pete Buttigieg at 9%, Tom Steyer at 5%, Amy Klobuchar at 4%, and 13% fall into the undecided camp. Because of the DNC proportiality rule and an 15% polling threshold, Sanders could very well take over half of the state’s delegates up for grabs that day.