Clinton vs. Trump Electoral College Maps: How Each Could Win

This electoral map from 270toWin is based on recent polling data as of October 31. If you go to the site here, you can build your own electoral maps using many different combinations. It shows a steep road for Donald Trump. The map also helps explain why Trump has been spending time in Michigan and Wisconsin lately. In both of those states, Hillary Clinton has leads outside the margin for error, although the polls have been tightening slightly. Trump clearly needs to play in some of the lightly shaded blue states. As a Republican nominee, he might normally have counted on Virginia, but that's the home state of Clinton's running mate Tim Kaine, who is a former governor and senator there. Still, polls have also been tightening in Virginia as of November 3, although Clinton maintains a lead there. To underscore the challenges for Trump, here are the RealClearPolitics polling averages for each of the lightly blue shaded states as of November 1: Pennsylvania (Clinton +6); Michigan (Clinton +7); Wisconsin (Clinton +5.7); New Hampshire (Clinton +4.7); Maine (Clinton +6.6); Colorado (Clinton +4); Minnesota (Clinton 4.6%). However, by November 3, Trump was faring better in some of those states, like New Hampshire and Colorado, where some recent polling showed the race to be a dead heat.
So how could Trump possibly win considering this map? The odds are why prediction sites are still overwhelmingly forecasting a Clinton electoral college victory. The wildcards: If the race continues to tighten even more, some analysts think that could make the electoral math more perilous for Clinton, and the race has been tightening every day in recent days. Furthermore, some battleground states don't have recent or well-regarded polling (or much of it to consider), rendering the current state of the race there a bit of a mystery. For example, some battleground states don't yet have any polling to measure how the FBI director's letter to Congress has affected the race (if at all). Others do but it's minimal or contradictory. Turnout also could play a factor, and there is always the possibility of polling error (which becomes more potentially significant the closer the race gets). Despite all of those caveats, this map shows why Clinton has a strong chance of winning. Her chance has been decreasing daily though. (270toWin)