Michigan’s Democratic primary for U.S. Senate is a three-way dead heat, according to a new poll conducted for Drop Site News and Zeteo.

The poll from Data for Progress found that 22% of likely Democratic primary voters support Dr. Abdul El-Sayed, endorsed by Bernie Sanders and a vocal critic of Israel; 23% support Haley Stevens, a pro-Israel Democrat who is being backed by party leaders in Washington, D.C.; and 22% support Mallory McMorrow, the J Street-endorsed candidate positioning herself in between Stevens and El-Sayed.

Notably, a third of voters were undecided—and a majority (64%) said they are less likely to support a Senate candidate who receives donations from AIPAC and other pro-Israel groups, while 10% said they are more likely.