Colorado Democrats pack a gym at a Denver high school during caucuses on March 1, 2016. The crowds and long lines have led to calls for the state to move to an open primary system.
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The United States that 25-year-olds (top row) were born into is very different from the one of the 45-year-olds (middle row) and 65-year-olds NPR spoke with. Those differing circumstances and events have shaped very different political outlooks.
A woman holds signs depicting the head of Republican presidential candidate and businessman Donald Trump as she waits to enter the auditorium to hear him speak on Wednesday in Derry, N.H.
Former Secretary of State Hillary Clinton receives the Liberty Medal in 2013 from the National Constitution Center. Former Florida Gov. Jeb Bush was the group's honorary chairman. Both are now likely presidential candidates for their respective party's nomination.
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A voter registration form and absentee ballot application at a Franklin County polling place in Columbus, Ohio, on Tuesday. The deadline to register to vote in Ohio is Oct. 9.