Sen. Elizabeth Warren has leapfrogged Sen. Bernie Sanders for second place nationally in the Democratic presidential primary, according to a new poll out Thursday. The new Fox News poll of registered voters who say they plan to participate in the Democratic primary or caucus in their state shows that although Warren still trails former Vice President Joe Biden, pulling in 20 percentage points to his 31, she posted an 8-point gain over the previous survey conducted last month. Sanders dropped 5 points in the poll, good for third place with 10 percent support.  Read the rest of the story at Politico.