Sure, there are some trends which are pretty well known during the 2 weeks of National conventions. Generally the Rs go up during theirs and the Ds go up during theirs. Ds have not gone up at all, and I don't expect they will. Sanders threw his whole revolution under the Hillary bus, and she backed over it a few times. Hiring Wassermann-Schultz was the most idiotic move possible for Hillary to make on Monday, and what did Hillary do? This added to a massive decline which was already in progress.
FWIW I'm not a Trump supporter either. I would rather have had Paul or Carson. Neither perfect, but both real conservatives who believe in the Constitution. The Republican party messed up big time, trying to put in a phony puppet in Bush and then panicking when the people didn't play along. They don't have who they want, but they can at least recover. The RNC actually supported the people's choice despite him not being a true Republican. That was a smart move given the climate.
The Democratic party and Hillary are still train wrecks in progress. It's actually just as fun to watch as the Republican side was. The difference is that Hillary was not wanted by anyone except for Hillary and the Party. Unlike her Husband Hillary sucks at faking it. The Democratic party didn't care and put her up anyway, cheating and lying as much as needed to get her wedged in. The people are pissed, and that is the theme of this whole election cycle (for both parties).
It's funny to keep listening to the paid for media claim that Sanders people are all going to vote Hillary. Not one group I have read or talked to will vote for her. She is the reason people supported Bernie to begin with, people are tired of the corrupt politicians working for the mega wealthy. Trump may be wealthy, but he's the smaller enemy on the field. The best hope the Ds have is that all the Bernie supporters stay home. Many are so disenfranchised that they will, but others are so pissed off they will vote for Trump.