A new Gravis Marketing survey in Iowa finds Donald Trump leading the GOP field with 19%, followed by Ben Carson at 14%, Ted Cruz at 11%, Carly Fiorina at 10%, Marco Rubio at 9% and Jeb Bush at 7%.
On the Democratic side, Hillary Clinton leads with 40%, followed by Bernie Sanders at 31% and Joe Biden at 12%.


?Political Trivia
Eight moments in political history. Put them on a timeline.
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Nine Justices. One case. How did they rule?
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Do you have your finger on the pulse of America?
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Four questions a day.
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