Democratic voters believe 2020 presidential candidate Pete Buttigieg is more electable than a host of more established politicians, including sitting senators, according to INSIDER polling.

Nearly 34% of registered Democrats who said they'd vote in the 2020 primary believe Buttigieg would beat President Donald Trump in a general election race. Buttigieg rates higher than every other 2020 candidate except Sens. Bernie Sanders and Kamala Harris, former Rep. Beto O'Rourke, and former Vice President Joe Biden.

Voters have slightly more confidence in Buttigieg than they have in Sen. Elizabeth Warren, who 33% of Democratic primary voters said would beat Trump. These figures aggregate the results of seven separate INSIDER polls taken since March.

Read more: How the INSIDER 2020 Democratic primary tracker works

Meanwhile, just 15% of Democratic primary voters believe Sen. Kirsten Gillibrand would beat Trump, 17% said the same of Sen. Michael Bennet, 20% said the same of Sen. Amy Klobuchar, and 27% said Sen. Cory Booker would beat Trump.

Enthusiasm for Buttigieg's bid has spiked over the last several months — rising much more quickly than other Democratic candidates, according to INSIDER's polling.

Read more: Pete Buttigieg has been the breakout 2020 Democratic candidate. Here's his stunning rise in 1 chart



Last December, only 20% of INSIDER poll respondents who were aware of the mayor said they'd be satisfied with a Buttigieg nomination. In May, 49% of those aware of him said they'd be satisfied. (In March, that satisfaction rate reached a high of 62%.)

Respondents' awareness of Buttigieg shot up from 4% to 48% during the same period.