Franken Gets Serious About Flipping Senate

Sen. Al Franken (D-MN) “is embarking on a yearlong campaign to help Democrats win it back and ensure that Senate races aren’t a forgotten undercard to the presidential contest. And after years of keeping a low profile on Capitol Hill, he’s actually happy to talk about it,” Politico reports.

“In a rare interview in his Capitol office, the Minnesotan described his most ambitious effort yet to help elect Democrats in his more than six years in Washington. Franken is using his celebrity to help raise hundreds of thousands of dollars for Democratic candidates, and Democrats are relying on him to play an outsize role, alongside high-profile senators like Elizabeth Warren and Cory Booker, to pick up the five seats the party needs to flip the Senate in 2016.”

NBC News looks at the top six Senate races to watch.