The 2016 US presidential election polls underestimated Donald Trump's support in swing states, while national polls were accurate regarding the popular vote won by Hillary Clinton. The 2020 polls were even more inaccurate, attributed to difficulties in reaching reluctant respondents. Experts, including Charles Franklin, noted that Trump's supporters' distrust of politics and polling contributed to these inaccuracies. Pollsters are now using new methods to better capture the views of underrepresented voters, particularly Trump supporters, in hopes of improving accuracy in future elections.