A manufacturing recession may already be under way in vulnerable swing states, challenging President Donald Trump’s campaign promise to deliver blue-collar jobs to his base.

Out of the 22 states with manufacturing job losses so far this year, some of those with the biggest percentage declines are states where Trump won by less than 5 percentage points, according to an NBC News analysis of the latest employment data, released last week. In Pennsylvania, the manufacturing sector lost 8,100 jobs. In North Carolina, it was 7,700, and Wisconsin lost 6,500 jobs.

Manufacturing jobs in states Trump won by less than 5 percent Change in jobs from January to September 2019. State Job losses or gains Trump's 2016 margin of victory Arizona +6,500 jobs 3.5% Florida +5,000 1.2% Michigan -4,700 0.2% North Carolina -7,700 3.6% Pennsylvania -8,100 0.7% Wisconsin -6,500 0.7%

The closure of Wood-Mode, a 77-year-old family-owned factory in the farmland of rural Kreamer, Pennsylvania, was responsible for over 900 of the manufacturing jobs lost in that state this year, one of the most by a single company.

Wood-Mode was known for making the “Cadillac” of custom cabinets. Full kitchen sets could sell for over $100,000. Even dealers who were burned by the shutdown spoke glowingly of the unparalleled craftsmanship and finish.

But there had been signs over the years that Wood-Mode was having difficulty, including cost-cutting moves, layoffs and difficulty paying bills and obtaining materials.

Cabinet lines can be had at hardware chains for a few thousand dollars. Cheap Chinese imports nipped at the bottom of the industry’s pricing ladder. And though the machinery was kept in good condition, some equipment was older, and took more steps or time than newer equipment. Facing these and other headwinds, in 2017 Wood-Mode restructured its debt and accessed millions of dollars in new liquidity.

It wasn’t enough, but no one expected what came next.

Employees who had worked there for decades were given minutes to leave. Partially completed cabinets were left on the floor of the 1.3 million-square-foot facility.