The final Maine Senate debate took a chaotic turn on Thursday, Oct. 15, when an anti-data-center protester interrupted about 15 minutes into the event, shouting that AI data centers are destroying the climate and poisoning water as incumbent Sen. Susan Collins (R-Maine) was answering an unrelated question, according to the New York Post.

Collins quipped: “So this is obviously one of Troy’s supporters.” Challenger Troy Jackson (D) shot back: “Oh, shut up,” adding that he did not know the protester.

The exchange came as data centers have emerged as a flashpoint in the race. In a debate earlier this week, Jackson said he is not really supportive of data centers but understands they may be something to deal with, raising concerns about electricity prices and water supply. Collins has denied claims that she is influenced by donors on the issue.

The race could determine which party controls the Senate in the Nov. 3 midterms.