According to ChainCatcher, a poll by Emerson College shows that former US President Trump leads current President Biden in seven swing states. The survey also found that, nationwide, 46% of registered voters support Trump, 42% support Biden, and 12% are undecided. Emerson College said that when third-party candidates joined, Trump either maintained or expanded his advantage in the United States and in six of the seven swing states. The poll was conducted on July 15-16, and the national and state polls had a plus or minus margin of error of 3%.