Don't be ridiculous. Of course not.
However, it may well be a good tactic to withdraw your advertising while the opposition is commanding the stage.
Your ads simply aren't going to get the same kind of attention that they'd receive in a normal week -- so, it's realistic to reserve the funds and expend them when the ads will be more effective.
My background is in advertising, so I understand the circumstances. Personally, though, I'd want to consider loading up during the Democrat's convention week -- and spending heavily during the actual coverage of the opposing convention on especially produced, highly provocative messages.
But that would be way beyond the imaginations of most political consultants...
How about ads telling the public what the RATs are going to say, what it means and what they are not saying. Exposing their blatant lies even before they tell them.
And then directing the public to watch it so they can see for themselves.