Hillary Clinton led the field for the Democratic nomination from the beginning of the campaign in early 2015 on her road to becoming the party’s nominee. Yet over the course of the campaign, many Democratic voters switched their preferences at least once. Below you can explore how she and other candidates gained (and lost) supporters among the same nationally representative group of Democratic and Democratic-leaning registered voters in Pew Research Center’s American Trends Panel. Walk through Hillary Clinton’s road to the nomination, explore shifts in Bernie Sanders’ support or follow early backers of Elizabeth Warren on your own. And for more on the patterns of support throughout the primary, and into the general election, see “In Clinton’s March to Nomination, Many Democrats Changed Their Minds.”