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What the winning Iowa campaigns say about the battle ahead

What the winning Iowa campaigns say about the battle ahead

What the winning Iowa campaigns say about the battle ahead

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Does federal review lead to real police department reform?

Does federal review lead to real police department reform?

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New York Times unveils lost snapshots of black history

New York Times unveils lost snapshots of black history

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Can the U.S. prevent an ISIS haven in Libya?

Can the U.S. prevent an ISIS haven in Libya?

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What’s at stake going into the New Hampshire primaries

What’s at stake going into the New Hampshire primaries

What’s at stake going into the New Hampshire primaries

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Seeing success, Oklahoma banks on universal preschool

Seeing success, Oklahoma banks on universal preschool

Seeing success, Oklahoma banks on universal preschool

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Fight moves to N.H. as Cruz and Clinton claim Iowa victory

Fight moves to N.H. as Cruz and Clinton claim Iowa victory

Fight moves to N.H. as Cruz and Clinton claim Iowa victory

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Sweden's welcome to refugees disturbed by violent backlash

Sweden's welcome to refugees disturbed by violent backlash

Sweden's welcome to refugees disturbed by violent backlash

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What does Yahoo’s downsizing mean for its future?

What does Yahoo’s downsizing mean for its future?

What does Yahoo’s downsizing mean for its future?

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Mosquito breeding grounds is front line in Zika fight

Mosquito breeding grounds is front line in Zika fight

Mosquito breeding grounds is front line in Zika fight

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Three-parent DNA treatment for rare defect raises debate

Three-parent DNA treatment for rare defect raises debate

Three-parent DNA treatment for rare defect raises debate

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Democrats debate liberal credentials on the trail in N.H.

Democrats debate liberal credentials on the trail in N.H.

Democrats debate liberal credentials on the trail in N.H.

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PBS News Hour

How Donald Trump brought unpredictability to Iowa

From on the ground in Iowa, Judy Woodruff talks to Amy Walter of The Cook Political Report and NPR’s Tamara Keith about that state’s broad support for Donald Trump, Sen. Ted Cruz’s ground game and strategy with religious voters, Hillary Clinton’s messaging about her track record and Sen. Bernie Sanders’ record-breaking number of campaign donations.