Yes. I expect a negative bounce.
It's already happening! Rasmussen has moved from +7 to +1 Trump. Of course, Real Clear Politics is taking their sweet time to factor this into their moving average.
Anyone with 1/2 a brain knows that Rassmussen at +7 when no one else was even close was an outlier.
And if you believe the Reuters polling Explorer, there has been a narrowing the first few days of this convention. Of course, that Reuters junk was crazy in the other direction.
Both are to be taken with a grain of salt.
We'll have to wait for the true numbers.