Presidential Candidates Hopefuls Also Ran Campaign Buttons. Welcome to the Presidential Hopefuls section on campaign buttons-etc.com. Pictured are presidential pinbacks and political memorabilia from candidates who either ran or where encouraged to run for president. Featured are presidential candidate campaign buttons for North CarolinaSenator Jesse Helms,Vermont Governor Howard Dean, New Jersey Senator Bill Bradley,and Speaker of the House Newt Gingrich,Rev. Jesse Jackson, California Governor Jerry Brown, Colorado Senator Gary Hart and many more!