Stump Sam Donaldson and Win a Free Hat

— -- Join the "Stump Sam" challenge!

E-mail us political trivia questions and we'll toss the quiz to Sam Donaldson during his daily appearances on ABC News Now.

Questions can involve any aspect of presidential trivia, dating from 1950 to the present.

ABC News Now is a 24-hour-a-day news feed available on digital cable, the Internet and other outlets.

To get your questions to Donaldson, please fill in the form below. And if you manage to outsmart the veteran reporter, we'll send you an ABC News Now baseball cap!

Thank you for participating!