This article is from the archive of our partner National Journal

Crossroads GPS unleashed $1.2 million in ads against five Democratic Senate candidates on Tuesday, using its early financial advantage to attack them on spending and taxes.

The ads target Sen. Claire McCaskill, D-Mo., Sen. Jon Tester, D-Mont., Rep. Shelley Berkley, D-Nev., former Democratic National Committee Chairman Tim Kaine in Virginia, and former North Dakota Attorney General Heidi Heitkamp.

Including this buy, the nonprofit affiliate of the GOP-aligned super PAC American Crossroads has spent $8.3 million on issue ads against Senate Democratic candidates so far this cycle, dating back to the summer of 2011.

Both American Crossroads and Crossroads GPS are flush with cash heading into the 2012 elections, and they are preparing to spend significant money in key battleground states, having raised more than $100 million so far this election cycle.

This article is from the archive of our partner National Journal.

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