section_path: Selection process/Campaigns and nomination
section_name: Campaigns and nomination
paragraph_text: Campaigns and nomination
  
  The modern presidential campaign begins before the primary elections, which the two major political parties use to clear the field of candidates before their national nominating conventions, where the most successful candidate is made the party's presidential nominee. Typically, the party's presidential candidate chooses a vice presidential nominee, and this choice is rubber-stamped by the convention.
  
  Nominees participate in nationally televised debates, and while the debates are usually restricted to the Democratic and Republican nominees, third party candidates may be invited, such as Ross Perot in the 1992 debates. Nominees campaign across the country to explain their views, convince voters and solicit contributions. Much of the modern electoral process is concerned with winning swing states through frequent visits and mass media advertising drives.