LOS ANGELES -- On the same night Democrats conclude their national convention, Republican presidential nominee Mitt Romney has released plans to launch a television advertising campaign across eight swing states.

Officials who track such spending report that Romney has purchased about $4.5 million in new advertising for the next several days.

Romney announced the new ad campaign Thursday night shortly after President Barack Obama addressed the Democratic National Convention in North Carolina.

The commercials suggest that Americans are not better off after nearly four years of Obama's leadership. They link Obama to high foreclosure rates, defense cuts, government regulations and the national deficit.

Romney's campaign says it will run 15 separate ads spread across Colorado, Florida, Iowa, Nevada, New Hampshire, North Carolina, Ohio and Virginia.

Also on HuffPost:

Loading Slideshow...
  • Romney Ad: Obama Attacks Success

  • Romney Ad: 'Obama Can't Run On That Record'

  • Romney Ad: 'Shame On You'

  • Romney Ad: Promises to Voters in North Carolina

  • Romney Ad: Standing Up to China

  • Romney Ad: 'We Are Not Doing Fine'

  • Romney Ad Looks at Obama's 2008 Promises

  • Romney Ad For Iowa: Goal Is a Balanced Budget