Tuesday night's midterm elections not only gave Republicans huge wins at the national and state level, but they also seriously called into question the ability of key Democrats to understand polling data and use that data to predict elections.
Vice President Joe Biden and Democratic National Committee Chair Debbie Wasserman Schultz (D-Fla.) continued to insist just before the election that Democrats would keep the Senate. But Republicans picked up seven seats Tuesday night, and are likely to pick up two more.
"I think they will hold the Senate," Biden said of Democrats just before the election.
Biden rattled off a series of predictions about various states, most of which didn't come true. Biden said Democrats would win in Alaska, Georgia and North Carolina, and would have a chance in Kansas.
Alaska was still not decided as of Wednesday morning, but the GOP was ahead there. Republicans took the three other states Biden noted on Tuesday night.
Biden's only correct prediction this week was that Democrats would win in New Hampshire.
"I think we're going to end up with 52 about, it that range," Biden predicted. Instead, it's Republicans that have 52 seats now, and they're likely to get to 54 when all the votes are counted.
Wasserman Schultz gave several interviews over the last week in which she said Democrats would hold the Senate because people think Democrats will do a better job taking care of them.
"We are going to hold the Senate, and we're going to hold the Senate because over the next couple of weeks... the one question that voters are going to ask themselves... is, who has my back?"
In another interview, Wasserman Schultz bragged about the Democrats' superior "ground game" in various states.
"We have, going into election day, a superior ground game that's run circles around Republicans," she said. "We have more absentee ballots, 25,000 more absentee ballots request in Iowa, and more returned in Iowa."
Joni Ernst (R) won in Iowa, 52-44.
"We have almost 50 percent of the early vote in North Carolina," she said. North Carolina was supposed to go to Democrats, but Thom Tillis (R) ended up winning 49-47.
"Charlie Crist will be elected the first... Democratic governor in the 21st century in Florida," she added. Crist lost in a squeaker, 48-47, against Gov. Rick Scott (R).
Biden and Wasserman Schultz were joined by many left-leaning TV personalities in predicting that Democrats would keep the Senate, or at least had a chance.