Adolph Reed Jr., a surrogate for Sen. Bernie Sanders Bernie SandersSirota reacts to report of harassment, doxing by Harris supporters Republicans not immune to the malady that hobbled Democrats The Hill's Morning Report - Sponsored by Facebook - Republicans lawmakers rebuke Trump on election MORE’s (I-Vt.) 2020 presidential campaign, said Tuesday that he was not at all surprised by former President Obama’s warning to the crowded Democratic primary field not to swing too far left.

Reed Jr. added that what he finds most revealing in the Democratic primary race this time around is how Sanders’s moderate rivals seem to be more frightened by a potential Sanders’s presidency than they are of President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE getting reelected.

“The thing that is most telling about the Democratic race this time, however, is how many of the so-called moderates or centrists ... seem pretty clearly to be less frightened by a Trump reelection than an election by the left in this race [of] Bernie Sanders,” Reed Jr., who is a professor at the University of Pennsylvania, told Hill.TV.

Reed Jr.’s comments come after Obama cautioned 2020 contenders during a fundraiser last week that their vision has to be “rooted in reality,” warning that the “average American doesn't think we have to completely tear down the system and remake it."

Obama pointed to health care and immigration as issues where some of the 2020 contenders may have gone too far, but he didn’t mention any of the candidates by name.

However, both Sanders and Sen. Elizabeth Warren Elizabeth WarrenOvernight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds On The Money: Half of states deplete funds for Trump's 0 unemployment expansion | EU appealing ruling in Apple tax case | House Democrats include more aid for airlines in coronavirus package Warren, Khanna request IG investigation into Pentagon's use of coronavirus funds MORE (D-Mass.), have called for broad structural change and a “political revolution” through progressive policies like Medicare for All.



This is not the first time Obama has expressed concern that the crowded 2020 field could be turning too liberal; in April, the former president warned that the progressive wing of the Democratic Party could be adopting purity tests that could wind up undercutting allies.

"One of the things I do worry about sometimes among progressives in the United States — maybe it’s true here as well — is a certain kind of rigidity where we say, 'Uh, I’m sorry, this is how it’s going to be,' and then we start sometimes creating what’s called a 'circular firing squad,' where you start shooting at your allies because one of them has strayed from purity on the issues," he said at the time.

"And when that happens, typically the overall effort and movement weakens,” he added.

—Tess Bonn