Joe Biden was the only leading Democratic candidate who did not go to the California Democratic Party State Convention last weekend in San Francisco—David Dayen, the new executive editor of The American Prospect, reports on the biggest of the Super Tuesday primaries. 

Also: The United Kingdom should extradite Julian Assange to Sweden for the investigation of rape charges against him, but neither the Swedes nor the Brits should extradite him to the United States because the new espionage charges against him are a political threat to freedom of the press and to all journalists and publishers—Bruce Shapiro explains.

Plus: Every Democratic primary candidate with more than 1 percent in the polls has signed the Indivisible pledge to support the Democratic winner, with one exception: Joe Biden. Why not? Ezra Levin comments; he’s a co-founder of Indivisible, a nationwide network of grassroots progressive groups.