Bernie Sanders spent a lot of dough to try and upstage presumptive Democratic presidential nominee Hillary Clinton in California. According to data from The Tracking Firm, Sanders burned through $2.2 million on advertising ahead of today’s California primary, which is about $800,000 more than Clinton spent. Sanders’ ad flurry included about 2,800 TV ads targeting California voters in the weeks leading up to the primary, according to an analysis of data provided by Kantar Media/CMAG.
