As of Wednesday, Colorado is the fourth largest state when it comes to spending on political ads with more than $72 million spent so far.
A majority of the spending comes from the Obama campaign, which has used more than $15 million in Denver alone on nearly 17,500 ads.
Romney's campaign spent about $7 million on 7,300 ads in Denver but has received millions more from groups like American Crossroads and Americans for Prosperity.
When it comes to spending nation-wide, the Obama campaign takes the cake. $245 million has been spent on 445,000 ads across the country. Mitt Romney has spent $118 million on 189,000 ads.
Outside groups including Super PACS and other interest groups account for half the ads being bought.
In terms of highest spending by state, Colorado ranks sixth but is second when it comes to amount of ads being played; that's because it's cheaper to advertise in this market.
Overall, the amount of money being spent in Colorado alone on the presidential race this election year could end up being higher than the total nation-wide spending during the 1992 presidential election.
The most money being spent is in Florida, which is no surprise. Florida is often considered the key battleground state. Virginia is in second place, followed by Ohio.
(KUSA-TV © 2012 Multimedia Holdings Corporation)