Pollster says 2020 polls are 'referendum' on Trump

Marist Poll director Lee Miringoff said on Wednesday that polling at this point in the 2020 presidential cycle is all about President TrumpDonald John TrumpFeinstein, Iranian foreign minister had dinner amid tensions: report The Hill's Morning Report - Trump says no legislation until Dems end probes Harris readies a Phase 2 as she seeks to rejuvenate campaign MORE's tenure in office.

"Right now, it's a referendum," Miringoff told Hill.TV's Jamal Simmons on "What America's Thinking." "It's up or down on Trump." 

"It becomes a choice as the campaign goes on, unless the Democrats keep the focus on him, which they will if his numbers stay where they are," he continued. 

Public opinion analyst Karlyn Bowman also weighed on the topic, saying surveys at this point aren't specific enough in their head-to-head matchups.

"A lot of the polls ask about a generic candidate at this point, and that doesn't really tell us very much," Bowman, a senior fellow at the American Enterprise Institute, told Hill.TV's Jamal Simmons on "What America's Thinking."

Multiple Democrats have already entered what is expected to be a very crowded primary to challenge Trump, including Sens. Kamala HarrisKamala Devi HarrisThe Hill's Morning Report - Trump says no legislation until Dems end probes Harris readies a Phase 2 as she seeks to rejuvenate campaign 2020 Dems put spotlight on disabilities issues MORE (Calif.) and Elizabeth WarrenElizabeth Ann WarrenThe Hill's Morning Report - Trump says no legislation until Dems end probes Harris readies a Phase 2 as she seeks to rejuvenate campaign 2020 Dems put spotlight on disabilities issues MORE (Mass.) and former Housing and Urban Development Secretary Julián Castro. 

A recent Washington Post/ABC News poll found that 56 percent of Democrats and Democratic-leaning independents did not give a specific name when asked who they would vote for if the party's primary were held today. 

The poll also found that 59 percent of independents, 64 percent of women, 90 percent of African-Americans and 76 percent of Hispanics said they would "definitely not" vote for Trump. 

— Julia Manchester