Mark Blumenthal

Mark Blumenthal is the principal at MysteryPollster, LLC. He was previously head of election polling at SurveyMonkey, senior polling editor for The Huffington Post, co-founder of Pollster.com and a long-time pollster and campaign consultant. 
Mark Blumenthal is the principal at MysteryPollster, LLC. He was previously head of election polling at SurveyMonkey, senior polling editor for The Huffington Post, co-founder of Pollster.com and a long-time pollster and campaign consultant. 
Articles by Mark Blumenthal