As Bernie Sanders targets Joe Biden’s supporters in a series of new campaign speeches, the Vermont senator is hoping to get a boost in Iowa and New Hampshire from Elizabeth Warren’s struggling campaign.

When she first announced her White House run, Sanders’s campaign and his supporters were initially dismissive, particularly after her abysmal early fundraising. Conversely, Warren’s campaign was perfectly happy letting Sanders take the brunt of criticism from centrists in the party over his Medicare for All plan, which she co-sponsored.