Capitol Chat: Advice For Presidential Candidates Thursday, March 24, 2016 | Sacramento, CA Listen / download audio Update RequiredTo play audio, update browser or Flash plugin. Wilfredo Lee / AP California, despite holding its primary presidential election in June and being a, somewhat, proportional state, could matter in the Democratic nomination process. And it will almost certainly provide the final big set of Republican delegates that could give Donald Trump the 1,237 he needs for the nomination — or deny him and ensure a contested GOP convention. Vice president of Political Data Inc., and regular contributor to Capitol Weekly, Paul Mitchell, has recently written an article with advice for presidential candidates hoping to win big in the Golden State. He joins Insight to explain the intricacies of California politics for the sake of these presidential campaigns.