WASHINGTON — Facebook co-founder Dustin Moskovitz, who pledged $20 million earlier this month to support Democrats in the 2016 election, on Saturday evening pledged an additional $8 million — including $5 million to Priorities USA, the Democrats primary Super PAC.

"The events of the past few weeks have only deepened my conviction that Hillary is the best choice for America. I hope that these contributions will help make that outcome a reality," Moskovitz wrote in a post on Medium Saturday evening.