<page_title> 2012 United States presidential debates </page_title> <section_title> Debates </section_title> <table> <cell> Democratic <col_header> United States presidential election debates, 2012 </col_header> <col_header> Participants </col_header> <row_header> P Participant. N Non-invitee. A Absent invitee. </row_header> </cell> <cell> Republican <col_header> United States presidential election debates, 2012 </col_header> <col_header> Participants </col_header> <row_header> P Participant. N Non-invitee. A Absent invitee. </row_header> <row_header> Democratic </row_header> </cell> <cell> Libertarian <col_header> United States presidential election debates, 2012 </col_header> <col_header> Participants </col_header> <row_header> P Participant. N Non-invitee. A Absent invitee. </row_header> <row_header> Democratic </row_header> <row_header> Republican </row_header> </cell> <cell> Green <col_header> United States presidential election debates, 2012 </col_header> <col_header> Participants </col_header> <row_header> P Participant. N Non-invitee. A Absent invitee. </row_header> <row_header> Democratic </row_header> <row_header> Republican </row_header> <row_header> Libertarian </row_header> </cell> <cell> President Barack Obama of Illinois <col_header> United States presidential election debates, 2012 </col_header> <col_header> N° </col_header> <col_header> P Participant. N Non-invitee. A Absent invitee. </col_header> </cell> <cell> Governor Mitt Romney of Massachusetts <col_header> United States presidential election debates, 2012 </col_header> <col_header> Date </col_header> <col_header> P Participant. N Non-invitee. A Absent invitee. </col_header> <row_header> President Barack Obama of Illinois </row_header> </cell> <cell> Governor Gary Johnson of New Mexico <col_header> United States presidential election debates, 2012 </col_header> <col_header> Host </col_header> <col_header> P Participant. N Non-invitee. A Absent invitee. </col_header> <row_header> President Barack Obama of Illinois </row_header> <row_header> Governor Mitt Romney of Massachusetts </row_header> </cell> <cell> Dr. Jill Stein of Massachusetts <col_header> United States presidential election debates, 2012 </col_header> <col_header> Location </col_header> <col_header> P Participant. N Non-invitee. A Absent invitee. </col_header> <row_header> President Barack Obama of Illinois </row_header> <row_header> Governor Mitt Romney of Massachusetts </row_header> <row_header> Governor Gary Johnson of New Mexico </row_header> </cell> </table>
Four candidates achieved the criteria: Democratic nominee Barack Obama, Green nominee Jill Stein, Libertarian nominee Gary Johnson, and Republican nominee Mitt Romney.