=======  ======  ==========  ==========  ==========  ========  ==============
  rowid  type    start       end         party       how       executive_id
=======  ======  ==========  ==========  ==========  ========  ==============
     31  prez    1845-03-04  1849-03-04  Democratic  election  James Polk
=======  ======  ==========  ==========  ==========  ========  ==============