A singular electoral college vote in Nebraska is fueling bitter Democratic divisions in the quest to flip a battleground House district, prompting accusations that a candidate vowing to preserve the state’s so-called “Blue Dot” is the one jeopardizing it and misleading voters.

The Omaha-area Blue Dot, which symbolizes the Nebraska 2nd Congressional District’s status as a Democratic anomaly carried by Kamala Harris in a ruby red state that awards electoral votes on a district-by-district basis, has become a flashpoint in the Democratic primary for the seat held by retiring centrist Rep. Don Bacon (R-NE).