Rising costs were a central point of contention. Barr, a Republican congressman representing Kentucky’s 6th District, defended President Donald Trump’s economic policies, citing tax cuts and increased domestic energy production. He blamed high prices in part on federal spending and policies enacted under former President Joe Biden.

“We do need to lower costs of gasoline, groceries, housing, everything,” Barr said, arguing the country was making progress after what he called disastrous policies from the previous administration.

Booker, a Democrat and former state representative from Louisville, blamed Republicans for rising prices and criticized Barr’s support for the Trump administration, including its tariffs and the war in Iran. He argued the government should spend less on overseas conflicts and more attention should go to costs at home.

“One of the most important things we need to do to bring down costs is get Andy Barr out of office,” Booker said.

The candidates also disagreed on health care. Barr criticized Booker’s support for Medicare for All, saying it would raise government spending and restrict patients’ choices. Booker said Barr had backed Medicaid cuts that could put access to care at risk, particularly at rural hospitals.

They sparred over artificial intelligence and the expansion of data centers, which can require substantial electricity. Barr said communities should retain control over whether data centers are built and should be protected from higher utility costs. “Data centers don’t belong in every community,” he said. Booker called for a moratorium, arguing local residents need stronger safeguards against corporate interests.

On immigration, Barr defended the administration’s border enforcement and deportation efforts. Booker called for secure borders while supporting pathways to citizenship and a more humane immigration system.

The Iran war drew a sharp exchange. Barr said the United States should preserve its military strength and complete its objectives, arguing that “peace through strength” can help prevent future wars. Booker called for an end to the conflict and stronger congressional oversight, saying U.S. troops should come home.

The debate also covered Social Security, tariffs and surveillance technology. Barr closed by highlighting his bipartisan work and saying he could deliver results for Kentucky. Booker urged voters to reject the political status quo and elect a senator focused on working families rather than corporate interests.

Kentucky’s early voting was set to begin Oct. 29, with Election Day on Nov. 3.