"The caucus system isn't built to bear the weight placed on it," says Dennis Goldford, a professor at Drake University in Des Moines, who closely studies the caucus and its strengths and weaknesses. "There aren't even paper ballots [in the Democratic caucuses] to use for a recount if something doesn't add up."
"The caucus is not an election. In a primary state, you have a 14-hour window to find the most convenient time to go and vote. A caucus is much tougher," said Mr. Goldford. "You need to show up at 7 p.m. on a Monday night, hoping you're not sick, or that your baby sitter shows up, or that there's no blizzard. Once you get there, it takes about a half an hour on the Republican side and around two hours on the Democratic side. It's more of a commitment of time and energy."