The 2016 election cycle was unusual in many ways, but NADA's political action committee held steady.
NADA PAC, which contributes money to U.S. congressional races, spent $4.6 million on races this election cycle as of Oct. 19, putting it roughly in line with its spending in the last several cycles.
Likewise, about 74 percent of the PAC's contributions were to Republican candidates, according to the Center for Responsive Politics website OpenSecrets.org, also in line with previous election cycles.
As Donald Trump and Hillary Clinton battled for the presidency in an unusually divisive and heated campaign, NADA PAC was able to stay on course with its spending because it focuses on congressional races, said Dave Regan, executive vice president of legislative affairs at NADA.
"We don't play presidential politics for a reason," Regan said.
Regan described the PAC as "grass-roots-oriented," meaning the PAC and its state teams are in constant contact with dealers to determine where to spend the money that they contribute to the PAC.
More often than not, that means overwhelmingly contributing to Republican candidates.