FILE - In this Oct. 7, 2015 file photo, Democratic presidential candidate Hillary Rodham Clinton speaks in Council Bluffs, Iowa. The Republican presidential contest has been aflutter for months, with all that preening and cackling from an overcrowded colony of rivals. Now it's time for the Democrats to spread their wings before a big national audience, with their first debate, Tuesday night.  (AP Photo/Nati Harnik, File)