Cory Booker 2020 presidential campaign
In 2018, Politico identified him as part of a movement along with Kamala Harris, Kirsten Gillibrand, Elizabeth Warren, and Bernie Sanders, given he voted "to stop [the president's] nominees for administration jobs"; all of the Senators in this group were considered potential 2020 presidential contenders at this point in time. That year and in early 2019, he began travelling early in the campaign schedule.