candidates this weekend might be west coast/best coast ever since california moved up its primary date, the state holds much more potential influence. cnn s kyung lah explains it s why 15 potential democratic candidates are hitting the campaign trail hard this weekend. reporter: democrats, go west. the largest group of presidential hopefuls this cycle, 15 of them, descending on california all at once. it looks like pasadena is ready for a political revolution. reporter: senator bernie sanders already in the state rallied in pasadena. he and the other candidates will be at the california state democratic convention this weekend. california s move up the primary calendar to super tuesday could give the state new heft in determining the nominee. why you hear california senator kamala harris. oh, it s good to be home!