How do celebrities influence the election?

DAYTON, Ohio (WDTN) – The presidential candidates can’t be everywhere during election season so sometimes they enlist the help of celebrities and surrogates on the campaign trail.
Justin Bartha who played Doug from the movie, the Hangover was campaigning for Hillary Clinton.
Happy Days’ Scott Baio stumped for Donald Trump at the Republican National Convention.
“When those good things happen that you never even see, I’ll know I had a little part to play in it,”