The Slatest

The Obama campaign is rolling out a new attack ad Monday that looks to capitalize on two numbers: 14 and 47. Fourteen as in 14.1 percent, the effective federal tax rate Mitt Romney paid last year. And 47 as in, "There are 47 percent who are with [Obama], who are dependent upon government, who believe that they are victims."

The Associated Press reports that the ad, which is part of a larger tax-themed assault on Romney, will begin airing Monday in Ohio but will also likely see airtime in other battleground states between now and November. The 30-second spot suggests that the president and his allies are likely to continue to batter the GOP challenger over his past tax returns. On Friday, Romney released a summary of his returns dating back 20 years, but he continues to steadfastly refuse calls from Democrats to release the actual documents for any year prior to 2010.

Here's the ad: