Gallup doesn't do election polling because it's too "unreliable," yet the survey data shown in RCP averages by the end of each of the last three presidential elections were very close to the actual result. As for the party ID numbers, nearly every measure that was done at the end of the 2012 presidential election showed a D+6 or D+7 spread in party ID, not including independents. The idea of a D+3 spread is illusory.
So you assume the ratio of Democrat Vote fraud is real voters... Its 4-6 percent of their total votes by most estimates.
Bottom line, they cannot do accurate polls in 2016, That's why there are so few people in their total population. They poll (if they actually poll) people willing to talk to pollsters and have a land line or is willing to spend minutes answering a cell phone from people they do not know. Think about that demographic and how it would vote. Is that Representative? Hell no.
Some like your Ballotopedia one do not even try to be credible, Their polling firm is a marketing firm that states it does not measure it manipulated to get the results its clients want. And the Hillary High Polls the antis have been shown are online polls. Really, you trust that?
Watching polls is for the gullible who lack common sense in this day and age.