PORTSMOUTH, N.H. (November 3, 2012)—Three days, nine states and the magic 270 electoral votes are on the minds of both President Barack Obama and rival Mitt Romney in the final touch-and-go stretch of campaigning before Election Day.

It’s now come down to a game of numbers including hiring reports, jobless rates, spending totals and early voting turnout.

In a game of metrics, each camp is looking for that last measure that will separate them at the finish line.

Mr. Obama's team is planning a series of larger-than-usual events this weekend aimed at drawing big crowds in battleground states including Ohio, Wisconsin and Virginia.

Romney is set to attend a Saturday morning rally in New Hampshire before making an afternoon appearance in Iowa, and two more appearances in Colorado that evening.