Kamala Harris, Beto O’Rourke, and Cory Booker are battling it out in the fundraising streets of Silicon Valley. Silicon Valley’s biggest Democratic donors are still wrestling with which candidate they want to support in the upcoming primary. There is no clear frontrunner among the donor class, according to the first fundraising snapshot released Monday. Tech money has for decades powered the Democratic fundraising machine, especially so in the age of Barack Obama, who embraced Silicon Valley.