A new academic paper says yes
A new study attributes Donald Trump's victory last year to communities hit hardest by military casualties and angry about being ignored. These voters, the authors suggest, saw Trump as an "opportunity to express that anger at both political parties."
The paper—written by Douglas Kriner, a political scientist at Boston University, and Francis Shen, a law professor at the University of Minnesota—provides powerful lessons about the electoral viability of principled non-intervention, a stance that Trump was able to emulate somewhat on the campaign trail but so far has been incapable of putting into practice.
The study, available at SSRN, found a "significant and meaningful relationship between a community's rate of military sacrifice and its support for Trump." The statistical model it used suggested that if Pennsylvania, Michigan, and Wisconsin had suffered "even a modestly lower casualty rate," all three could have flipped to Hillary Clinton, making her the president.
The study controlled for party identification, comparing Trump's performance in the communities selected to Mitt Romney's performance in 2012. It also controlled for other relevant factors, including median family income, college education, race, the percentage of a community that is rural, and even how many veterans there were. "Even after including all of these demographic control variables, the relationship between a county's casualty rate and Trump's electoral performance remains positive and statistically significant," the paper noted. "Trump significantly outperformed Romney in counties that shouldered a disproportionate share of the war burden in Iraq and Afghanistan."