Probably not. Media would respond by mocking the ploy, laughing that this was all “de-bunked”, and is just evidence of Trump’s ‘desperation’. Those disinclined to vote for Trump would continue to believe deep state media, and would not be swayed. (My two cents...)
They would then repeatedly blast Republicans for pushing an unsubstantiated claim. The MSM does all the blocking and tackling for the democrats.
As always, Biden will get a free pass.