Former Vice President Joe Biden said Tuesday that he would be "dumbfounded" if Democrats failed to retake the majority in the House, and expressed certainty that President Trump would question the legitimacy of the results if Republicans falter in Tuesday's midterm elections. "I guarantee he’ll challenge the legitimacy of the vote," Biden said with a laugh when asked about the possibility after casting his ballot in Delaware. "You know, he’s still looking for that million crowd that was there for his inauguration, for God’s sake," Biden continued. "He’s an interesting guy." Biden spoke with reporters after he voted on Tuesday.