Democratic pollster Celinda Lake said in an interview that aired Tuesday on "What America's Thinking" that 2020 presidential candidate Sen. Elizabeth Warren Elizabeth WarrenHarris joins women's voter mobilization event also featuring Pelosi, Gloria Steinem, Jane Fonda Judd Gregg: The Kamala threat — the Californiaization of America GOP set to release controversial Biden report MORE (D-Mass.) has her feet in two pools of Democratic voters.

Lake says the progressive senator is able to appeal to voters looking for a pragmatic candidate, as well as those looking for an outsider to shake up Washington.

"She is interesting because she brackets both pools," Lake, president of Lake Research Partners, told Hill.TV's Jamal Simmons on Monday.

"She brackets the pool of people who want to get things done," she continued. "She's won the primary of ideas already."

"Yet she's also an outsider talking about campaign finance reform, funding her campaign only with small donor contributions," she said. "So she's got a foot in both worlds, and I think it's interesting if she can pull enough from both to be a leader."

Many of Warren's progressive ideas and stances have been compared to those of fellow 2020 contender Sen. Bernie Sanders Bernie SandersButtigieg stands in as Pence for Harris's debate practice Bernie Sanders warns of 'nightmare scenario' if Trump refuses election results Harris joins women's voter mobilization event also featuring Pelosi, Gloria Steinem, Jane Fonda MORE (I-Vt.).

Like Sanders, she is known for championing economic populism, but she also has backed progressive ideas aimed at helping young children and working parents, including universal child care.

Warren co-sponsored paid leave legislation with fellow 2020 contender Sen. Kirsten Gillibrand Kirsten GillibrandSunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election Suburban moms are going to decide the 2020 election Jon Stewart urges Congress to help veterans exposed to burn pits MORE (D-N.Y.) in February.

— Julia Manchester