White House hopeful Joe Biden Joe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE appeared to swipe at 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.), his chief primary rival, Wednesday as the Massachusetts Democrat surges in the polls.

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“I want to take that vision. And yes, take the plans. But that’s not enough. It takes a proven ability to get things done. We’re not electing a planner,” Biden said during a speech Wednesday, referencing former President Kennedy’s vision when he announced the U.S. would land on the moon.

“There is no one in this race who has a stronger record of passing important, consequential legislation than I have,” he added.

The broadside comes as a handful of national and statewide surveys show Warren leapfrogging Biden for the lead in the primary. The RealClearPolitics polling index shows the two virtually tied at the top of the crowded field.

Warren has seen her political prospects rise on a bevy of detailed policy proposals, leading her to adopt the rallying cry, “I’ve got a plan for that.” She also out-fundraised Biden in the third quarter of 2019 by about $9 million.

Her campaign did not immediately respond to a request for comment regarding Biden’s remarks.

Biden’s comments come as Warren’s campaign is set to expand and gin up support in crucial states.

The Massachusetts lawmaker last month launched an eight-figure TV and digital ad buy in the key early nominating states of Iowa, New Hampshire, Nevada and South Carolina. Her campaign has also announced plans to expand its resources on the ground, including hiring new state directors and organizers in states with competitive state and congressional races.