Voter turnout nationwide has been on a decline for decades. This election year actually had more voters than did election cycle in NYC. In 2012 only 2.1M people voted in NYC, compared to this year's 2.5M. It has consistently been low each election. This year and in 2008 were high compared to recent elections. 2004 only had 2.28M people vote in NYC. The math doesn't justify your reasoning at all. Barely half of NYC's population is even registered alone, and of that, only about half of those registered actually go out and vote. However, a big city like NYC has much higher impact in the state's vote, since the total # of votes is much less than that nationwide. That means that the big cities actually have a much larger impact in the electoral vote than they do in a popular vote.