mark: jon favreau. really good to see you. , too. ♪ mark: when we return, we look at the role silicon valley plays and presidential politics. that is next. ♪ ♪ mark: in advance of tuesday's california primary, we thought we would catch up on silicon valley -- not the hbo program. although, obviously, we always pulling for the pied piper. in the last couple of decades has grown into quite a political force. this year though, something seems a little bit off. the tech hub around san francisco hasn't reacted to any presidential candidates so far. to understand why this has happened, we might need a quick history lesson of silicon valley's role in presidential cycles in the recent past. >> silicon valley, front and center. again. here's what happened. 1939, hewlett-packard started in a garage. more stuff happens, things get invented, the internet. 1990's, the valley explodes, helps bill clinton, clinton helps the valley. >> he passed nafta. the 1996 telecommunications act. >> 2000, the valley is split. they like they like gore. >>