PHOTOS: Trump, Clinton await results on Election Day

FILE - In this March 18, 2014 file photo, voters cast their ballots in the Illinois primary in Hinsdale, Ill. Republicans have gained ground on Democrats' strength in registering voters in three battleground states _ and kept their razor-thin advantage in Iowa, offering some hope for Donald Trump and raising the stakes over ballot access in the final weeks before Election Day. (AP Photo/M. Spencer Green, File)