The model suggested that under Trump, GDP "eventually falls relative to current law, falling by 0.4 percent in 2034 and by 2.1 percent in 30 years". Under Harris, the report found, "GDP falls by 1.3 percent by 2034 and by 4 percent within 30 years (year 2054)".

About 4 in 10 registered voters say Republican Trump would do a better job handling the economy, while a similar number say that about the Democratic vice president.

A new poll finds neither Kamala Harris nor Donald Trump has a decisive edge with the public on the economy, turning an issue that was once a clear strength for Trump into the equivalent of a political jump ball.