FiveThirtyEight's Nate Silver says if only women voted, Barack Obama would be on track to grab 347 electoral votes. If only men voted, Mitt Romney would be headed toward 321 electoral votes.
Silver notes this year could see the biggest "gender gap" ever.
If only women voted, President Obama would be on track for a landslide re-election, equaling or exceeding his margin of victory over John McCain in 2008. Mr. Obama would be an overwhelming favorite in Ohio, Florida, Virginia and most every other place that is conventionally considered a swing state. The only question would be whether he could forge ahead into traditionally red states, like Georgia, Montana and Arizona.
If only men voted, Mr. Obama would be biding his time until a crushing defeat at the hands of Mitt Romney, who might win by a similar margin to the one Ronald Reagan realized over Jimmy Carter in 1980. Only California, Illinois, Hawaii and a few states in the Northeast could be considered safely Democratic. Every other state would lean red, or would at least be a toss-up.