Well, I wasn't here in 2010, so I have no idea.
I can say for sure, though, that my point is correct about 2012 and 2016.
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With all due respect, no, your argument is flawed.
1. The majority of the polls were wrong on Romney's turn out. He wound up
losing by more than 3% more than the polls showed. The polls did not take into account the low favorables for Romney from conservatives. Romney lost because he could not get his own base to show up at the polls, while he actually won independents.
2012 - General Election: Romney vs. Obama | RealClearPolitics
2. The polling is wrong again in this election, as Trump has brought in a whole new segment of the population to vote for him, some for the first time in their lives they are going to vote, but this is the 'Likely not Registered' voters that the Registered voter polls miss, and the differences in the polls during the primaries show this to be about a 10% missing vote for Trump. The polling companies are not trying to think outside the box, they are trying to please the people who hire them, and all of them are antiTrump.
3. Most of the discussion about polls during an election is media driven by party functionaries. No matter what the real numbers are they will try to spin an optimistic picture for their candidate. I have voted four times in my whole life for a Republican president, once for a Democrat and five times for a third party candidate and on llocal elections I always vote Democrat. I am about as independent as you are likely to ever meet. And even I see these polls as slanted and gave a specific example of Reuters deliberately shifting their polls to favor Hillary Clinton by dropping the 'Neither' category. They also dont normally run the full field of the top four candidates, and this also favors Hillary. IF you take the MEDIAN results from the latest poll of all four candidates, Hillary is only up by 4, not 7.
RealClearPolitics - Election 2016 - General Election: Trump vs. Clinton vs. Johnson vs. Stein
The polls are being stacked for a Clinton win by the people who own the media and thus are the polling companies customers who wont hire them again if they are not getting the results that their owners want, the owners being the elites of both parties.
Unless you are wealthy enough to not ever have to work again, you are not in that little club, friend. That means for you to support Hillary, you have to vote to cut your own throat.