The day Barack Obama and Mitt Romney have been working toward for months is just one week away, and the candidates are expending the final bit of energy in their campaigns on key swing states that could decide the election.

According to The Huffington Post's Electoral College map projection, which is based on an analysis of various nationwide and state by state polling data, shows five states in the toss up pile as of Tuesday: Colorado, Florida, New Hampshire, Ohio and Virginia.

Those states represent a total of 73 electoral votes — a hefty sum considering each candidate needs a total of 270 electoral votes to successfully win the election. That sum would be incredibly valuable to either candidate, based on The Huffington Post's current projection, which has President Barack Obama at 259 electoral votes and Mitt Romney at 206 votes.

In Colorado, nine electoral votes are up for grabs to the candidate who can carry the state on Nov. 6, but the race is incredibly tight.

According to The Huffington Post's data analysis, Obama is ahead in Colorado by just a hair. The president is polling at 48 percent in the Centennial State, while his Republican challenger Romney is one percentage point behind him at 47 percent.

Data from national polling firm Rasmussen tells a slightly different story.

In that poll, Romney is ahead with support from 50 percent of Colorado voters surveyed, while Obama has support from 46 percent. Of the remaining respondents included in the poll, 2 percent plan to vote for some other candidate, and 1 percent are still undecided about how they will cast their vote on Nov. 6.

Rasmussen's data shows that Colorado is one of several states that has come within Romney's grasp over the last few days.

"Colorado remains a toss up in the Rasmussen Reports Electoral College Projections," the Rasmussen report said. "But Colorado is the fourth swing state that has moved in Romney's direction in the past week. Florida, Missouri and North Carolina have now shifted from 'Toss-Up' to 'Leans Romney.'"