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2020 presidential election: Track which candidates are running

Driving the news: Thursday's 3-hour Democratic debate marked the first time the top contenders all squared off on 1 stage, resulting in the 2020 cycle's most comprehensive discussion yet among the candidates most likely to face Donald Trump as the party's nominee.

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Where top 2020 candidates stand on climate policy and the Green New Deal

Sen. Bernie Sanders (I-VT) at a rally May 13. Photo: Alex Wong/Getty Images

The Green New Deal resolution, introduced in February by Rep. Alexandria Ocasio-Cortez (D-N.Y.) and Sen. Ed Markey (D-Mass.), has helped cement climate change as a real topic in the 2020 presidential race.

What's new: More Democratic candidates have pitched climate change policy that goes beyond the Green New Deal, largely to prepare for events like CNN's "climate crisis" town hall. The GND — which is more of a call to arms than a strict policy proposal — outlines a 10-year mobilization plan to move the country toward a 100% carbon-free power system and a decarbonized economy.