(CNN) Donald Trump's claim that he lost the popular vote because "millions of people" voted illegally has been debunked, but some of his supporters are sticking by it.

Longtime Trump supporter Paula Johnson told CNN's Alisyn Camerota that at her polling station in Nashua, New Hampshire, she caught people voting illegally who told her: "The president said I could vote, I'm here illegally."

Camerota asked Johnson where she heard that President Barack Obama said undocumented immigrants could vote.

"Google it," another Trump supporter, Susan DeLemus, said. "You can find it on Facebook."

Camerota pulled out her phone to look for herself, eventually finding a video that had been deceptively edited.