Poll: Warren leads Biden in Iowa, New Hampshire

Sen. Elizabeth WarrenElizabeth WarrenTrump defends Roger Stone move: He was target of 'Witch Hunt' Democrats blast Trump for commuting Roger Stone: 'The most corrupt president in history' Pharma pricing is a problem, but antitrust isn't the (only) solution MORE (D-Mass.) leads former Vice President Joe BidenJoe BidenDonald Trump Jr. to self-publish book 'Liberal Privilege' before GOP convention Tom Price: Here's how we can obtain more affordable care The Memo: Democrats feel rising tide in Florida MORE in Iowa and New Hampshire, but South Bend, Ind., Mayor Pete ButtigiegPete ButtigiegBiden campaign hires top cybersecurity officials to defend against threats Biden strikes populist tone in blistering rebuke of Trump, Wall Street Buttigieg's new book, 'Trust,' slated for October release MORE has surged into contention in the Hawkeye State, according to a new poll.

The latest Firehouse Strategies-Optimus survey finds Warren with a narrow lead in Iowa at 25 percent support, followed by Biden at 22 percent and Buttigieg at 17 percent. Sen. Bernie SandersBernie SandersBiden wins Louisiana primary Oh, Canada: Should the US emulate Canada's National Health Service? Trump glosses over virus surge during Florida trip MORE (I-Vt.), who has been recovering from a heart attack, is in fourth place at 5 percent in Iowa.

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Buttigieg is the biggest mover in the Iowa poll, gaining about 9 points.

Warren’s lead is larger in New Hampshire, where she registers 25 percent support, followed by Biden at 18 percent and Sanders at 9 percent.

Still, Biden leads big in South Carolina, where black voters make up more than half of the Democratic primary electorate. Biden comes in at 32 percent, compared to 16 percent for Warren and 8 percent for Sanders.

Support for impeachment among Democrats in the early-voting states has skyrocketed in recent weeks, and stands at 79 percent in Iowa, 75 percent in New Hampshire and 72 percent in South Carolina, notching double-digit gains in all three states.

In addition, a slim majority of Democrats in all three states believe that President TrumpDonald John TrumpDeSantis on Florida schools reopening: 'If you can do Walmart,' then 'we absolutely can do schools' NYT editorial board calls for the reopening of schools with help from federal government's 'checkbook' Mueller pens WaPo op-ed: Roger Stone 'remains a convicted felon, and rightly so' MORE should be imprisoned, as well as impeached.

The Firehouse-Optimus survey of 1,765 likely Democratic primary voters was conducted Oct. 8-10 and has a margin of error of 3.6 percentage points in each state.