When Democrats gathered this week in a West Michigan congressional district they’re trying to flip blue, they wanted to talk about the cost of living under President Donald Trump. But it didn’t take long for the conversation to turn to a controversy dividing their party.

One attendee chided U.S. Rep. Hillary Scholten for failing to support Democratic Senate nominee Abdul El-Sayed.

“Your inflammatory rhetoric has nothing to do with creating a better economic future for the people of West Michigan, and everything to do with protecting the pipeline of our tax dollars to Israel,” the woman said.

The exchange captured a problem confronting Democrats as they head toward November. Party leaders believe concerns about the economy have given them an opening to win control of Congress, but internal divisions are making it harder to keep the focus there.

Nowhere is that tension more pronounced than Michigan, where Democrats are trying to regroup after a bruising Senate primary that El-Sayed won over U.S. Rep. Haley Stevens earlier this month. Disputes over Israel, antisemitism and El-Sayed’s association with controversial online commentator Hasan Piker have complicated the party’s effort to turn its attention to Republican Mike Rogers.