The presidential election was much closer than most national polls had predicted. Many polls showed President-elect Biden with a sizable lead over President Trump. Carleton College political analyst Steven Schier says the last two presidential elections have shown that polls are “flawed in a fundamental way”…

“Because the response rate to surveys is down below 5% and the people who will respond to surveys tend to be disproportionately highly educated and high-income, so it’s very hard to poll a large part of the American people and get representative results.”

Schier says the solution is “not obvious” and may require more elaborate survey techniques–which could be expensive and result in less polling in the future.