I suspect that the Republicans are winning elections using a simple and legal scam:
They simply tell their most loyal people to lie when answering polls. i.e. to say that they will vote for the democratic candidate.
This skews polls in favor of the Democrats, which in turn causes the Democratic campaigns to mis-allocate campaign resources.
For example, Republicans lying when polled in Wisconsin made it seem that Wisconsin was solidly Democrat when it was in fact a battle ground state. The Democrats felt safe not campaigning in Wisconsin or allocating campaign resources. The result was that they lost Wisconsin.
Besides that, when the Obamacare premiums were raised, just before the election, it pissed a hell of a lot of people off - so they voted for Trump.
LOL its a vast right wing conspiracy?



Or more likely working class Americans are sick of the lefts shit.
Then how did Hillary win the popular vote?
The history of Republican victory's in the past 20 years or so, shows an abnormal, yet consistent contradiction with polling - usually occurring only in key electoral districts.
Are all the pollsters wrong? Is there methodology consistently flawed? It don't think so...unless you account for the possibility that people blatantly lie when polled, and that those people are all of the same political persuasion.
Remember it's not illegal to lie when polled, so this would not be in any way cheating on the elections themselves - just generating misinformation for their opponents to base their strategies on.