"The NRA must prove beyond all shadows of doubt or accusations that we are squeaky clean," Nugent wrote.
"Thanks for nothing a**holes," Nugent wrote on Facebook to Michigan voters who backed Democrats.
The revelation paints a different picture than the gun rights group's previous disclosures.
Nugent previously described the students as "soulless," "mushy-brained children."
Ted Nugent also called the young activists "mushy-brained," "liars," "pathetic" and "soulless."
These celebrities have high praise for Donald Trump: "I definitely don't think he's like Hitler."