No one thought it would last this long. After 153 days and 58 contests, the Democratic primaries will finally be over. But even after so many contests, there are voters who still haven’t made up their mind. We talk to one voter from South Dakota and one from Montana about what’s left to know before they decide on a candidate.

Congressman Jason Altmire, D-Pa., is an uncommitted superdelegate who's been waiting to the end to pick his candidate. The Takeaway talks with the hold out about his decision — and a recent call from the Obama campaign.

The United Nations has convened a high-level conference of the World Food Program in Rome to discuss the challenges of climate change, bioenergy and food security amid rises prices. Making an appearance is Zimbabwean president Robert Mugabe, whose own country faces an inflation rate of 165,000 percent.

Two weeks ago, long-serving Massachusetts senator Ted Kennedy was diagnosed with a glioma, a rare cancerous brain tumor. Yesterday, he underwent extensive brain surgery and now the senator faces radiation treatments and chemotherapy. The Takeaway talks with Dr. Bernadine Healy, former director of the National Institutes of Health, to get a glimpse of what lies ahead for the senator's health. Dr. Healy should know — she was diagnosed with a glioma almost 10 years ago.

One of the fathers of rock and roll, guitarist Bo Diddley, passed away in his Florida home on Monday at the age of 79. The legendary musician created the distinctive "Bo Diddley beat," which has transcended musical genre. Jack Grace, the "Martini Cowboy," explains. Listen to Bo Diddley's music and view photos of his life in music (from The New York Times), then tell us about your favorite covers.