Lauren Boebert and Eileen Laubacher spent an hour trading barbs over the Iran war, tariffs and grocery prices Monday night in the only scheduled debate of the Colorado 4th Congressional District race, a faceoff that grew heated when the Democratic challenger accused the Republican incumbent of defending a war she said killed 150 girls at an Iranian school.
The hour-long debate at 9NEWS studios in Denver, as reported by The Denver Post, was hosted by 9NEWS and is the only one scheduled this fall in the race for a sprawling district that covers all or parts of 21 counties across the eastern plains, including portions of Arapahoe, Douglas, Larimer and El Paso counties. Boebert, 39, is the Republican incumbent who has represented the 4th District since 2024 after previously representing the 3rd District. Laubacher, 58, is a retired Navy rear admiral and Democratic challenger who served 34 years in the Navy before retiring in 2024.
Iran War Becomes Flashpoint
The sharpest exchange came over the U.S. war with Iran. Per the Post's account of the debate, Laubacher said the United States and Iran were negotiating over Iran's nuclear program when President Donald Trump bombed Iran on February 28, 2026, and argued that starting a war during negotiations was wrong, saying the United States should have pursued serious diplomatic efforts instead. She also said the United States killed 150 girls at an Iranian school during the conflict.
Boebert said she did not want the country to be at war but stood by Trump, arguing the president is commander in chief and that the war aimed to prevent Iran from obtaining a nuclear weapon. Speaking separately to Raw Story, Boebert put it this way: “We do not have boots on the ground. I do agree that this is expensive.” She added, “This was never about regime change, as my opponent thinks. This was about making sure Iran never had a nuclear weapon.” Moderator Kyle Clark pushed back during that exchange, telling Boebert, per Raw Story, “At one point it was regime change. At one point it was the bomb, and there were others in the mix,” pointing to what he characterized as shifting rationales from Trump for the war.
Tariffs, Inflation and the Cost of Groceries
The candidates also sparred over tariffs and inflation, with Laubacher saying tariffs hurt consumers and arguing Congress should look after ordinary buyers. She said many of the Trump administration's tariffs are effectively paid by Americans rather than by foreign governments. Boebert, in turn, described the tariffs as a tool to secure favorable U.S. trade deals, framing them as leverage rather than a direct hit to household budgets.
The two did find common ground on at least one economic point: both agreed that Trump made a mistake importing Argentinian beef in an attempt to lower meat prices. They also agreed that the Biden administration's border policy had been a disaster, even as they differ sharply on what to do about immigration going forward. Laubacher supports a path to permanent residency for some undocumented immigrants who pay taxes or have applied for asylum, excluding those convicted of violent crimes, while Boebert maintains that anyone in the country illegally must leave, according to a voter guide from the Colorado Sun.
A Once-Deep-Red District Now in Play
The debate's backdrop is a district that has historically been dominated by farming and ranching and was long considered safely Republican. The last Democrat to hold the seat, Betsy Markey, left Congress in January 2011 after a single term. But the Democratic Congressional Campaign Committee added the 4th District to its list of districts in play in August 2026, and Laubacher, who changed her party affiliation from Republican to Democrat about a year before the debate, has emerged as a well-funded challenger. Per FEC reports through June, Laubacher had nearly 15 times as much cash on hand as Boebert heading into the race, with third-quarter fundraising reports due Thursday.
Laubacher has said her former Republican affiliation reflected the party's one-time emphasis on fiscal restraint, strong military defense and individual liberties, and she has argued that the modern Republican Party is barely recognizable to her now. She moved to Highlands Ranch in 2024 after living in the neighboring 7th Congressional District, where she still owns a home. Boebert moved into the 4th District in 2025 after leaving the 3rd District, a relocation that followed a 2023 incident in which she was removed from a musical performance in Denver after patrons objected to her conduct. During the debate, Boebert said she favors an approach aimed at improving how people disagree across political lines.
On policy, the candidates remain split on taxes, immigration and foreign aid. Laubacher supports making permanent the tax breaks for workers earning tips and overtime, while Boebert backs making all of the tax provisions in H.R. 1 permanent, according to the Colorado Sun's reporting. The two also differ on Medicaid, with Laubacher saying she generally supports work requirements but considers the law's paperwork demands excessive, while Boebert backs the requirements as written. On Ukraine, Laubacher supports continued U.S. military aid, invoking a promise to protect Ukraine from Russia, while Boebert favors pausing aid to all countries.
Separately, federal inflation data for the Denver-Aurora-Lakewood area shows the Consumer Price Index for all urban consumers fell 0.7 percent over the two months ending in July 2026, according to the U.S. Bureau of Labor Statistics, with the energy index down 9.6 percent and the food index up 0.8 percent over that span. Colorado voters will decide the race on November 3.
