Among all likely voters, Joe Biden and Donald Trump receive a similar level of support online and via phone. Biden received 55 percent support to Trump’s 45 percent support among those who took the survey online and Biden received 56 percent support to Trump’s 44 percent among phone respondents.

In our prior studies, we observed that differences between phone and online are larger among adults with higher levels of formal education and those with higher incomes. On education, we find limited evidence for this in the 2020 race. Among income levels, there is evidence of a mode effect. Trump receives lower support on the phone than online among those making $75,000 or more each year, whereas Biden receives lower support on the phone than online among households earning less than $35,000 annually.

However, differences between income groups did not reach statistical significance. When taken together, differences between subgroups did not change the overall finding that President Donald Trump lagged behind Joe Biden by 10 percentage points in both online and phone interviews.