Elizabeth Warren is set to give a speech in New Hampshire Thursday.
Her aides say she will blast Joe Biden and Pete Buttigieg for continuing to hold fundraisers with the ultra-wealthy.
She also plans to call them “naive” about the fight ahead.
The direct engagement with Buttigieg and Biden is a shift for Warren.
In recent weeks she's seen her campaign struggle.
Initially, she resisted going after her Democratic rivals directly.
Politico reports she preferred to stay above the fray.