Washington (CNN) - Mitt Romney's presidential campaign bought one week's worth of TV ad time for $2 million Tuesday, marking its largest seven-day commercial time buy since it began its general election campaign, according to a Republican ad buying source.
The new buy will bring the total for general election advertising for the Romney campaign to $5.25 million.
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For spots beginning Wednesday, the campaign purchased $317,205 in Iowa, $550,570 in North Carolina, $810,640 in Ohio and $377,325 in Virginia - all considered key battleground states in the general election. These are the same four states the campaign has been advertising in for two weeks.
The new buys run from Wednesday through next Tuesday.
There is no word what commercials the campaign may be running. The last two weeks has seen the campaign broadcast two different ads highlighting some of the policy initiatives Romney would enact on his first day in office.
The presumptive Republican nominee's ad buys come as the Obama re-election campaign is airing just over $25 million worth of commercials in eight battleground states–the same four where Romney is on the air plus Colorado, Florida, Iowa, New Hampshire and Nevada. The Obama team's ads went up May 9th and will run through next Monday.