Independent expenditure committees have spent more than $47 million in state races through Thursday. Many donors give to multiple committees, which also share some of the same consultants and ad buyers. Explore connections with the link to an interactive graphic in this story.
Scientists estimate the Sierra Nevada snowpack, crucial to California's water supply, could shrink by 75 percent by the end of this century due to climate change. State officials this week released a revised water action plan that includes steps to cope.