Ad-spending update: $634 million spent, new groups on the scene

By NBC's Domenico Montanaro

In just over the last four days, almost $30 million has been booked in presidential campaign ads. Television and radio ad spending across the country now tops $634 million, according to data provided to First Read from ad-buying firm SMG Delta.

Team Romney (the campaign, RNC, and outside groups supporting him) has expanded its advantage, spending $340 million to Team Obama’s $293 million.

Team Obama had been outspending Team Romney in Florida, Ohio, and Virginia. But now President Obama and his supporters only have an edge in Ohio and Colorado.

Two more outside groups have emerged onto the presidential scene with ad buys -- Americans for Job Security and Secure America Now.

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Americans for Job Security has booked $8.7 million in ads across six battleground states, including $2.3 million in Florida, $1.8 million in Ohio, $1.2 million in North Carolina, $1 million in Virginia and Colorado, and $494,000 in Iowa.

Secure America Now is spending $501,000 all in Florida – and mostly in Ft. Myers and West Palm Beach -- with an ad that uses Israeli Prime Minister Bibi Netanyahu. They also placed $80,000 on cable in Miami.

TD Ameritrade founder Joe Ricketts’ group Ending Spending, which played in the primary, is pledging to spend $10 million on the race, the Wall Street Journal reported, but the bookings for those ads have not come across yet, according to SMG Delta.

Outside spending accounts $277 million, about 44 percent of the total – 80 percent of that money ($222 million) has gone to support Mitt Romney.

About 19 percent of the money supporting President Obama has come from outside groups ($55 million) whereas 65 percent of the money going to support Romney is from outside groups.

Here’s how the groups breakdown:

Obama $238,701,379
Romney $99,625,191
Crossroads GPS $60,772,380
American Crossroads $50,926,768
Priorities USA $49,494,474
AFP $46,469,165
Restore $43,421,505
RNC $18,703,104* (the RNC is not included in “outside spending” or as part of the campaign)
Americans for Job Security $8,667,287
CWA $4,783,656
American Future Fund $4,342,414
American Energy Alliance $2,491,572
SEIU $2,497,313
Planned Parenthood $1,447,734
Priorities/LCV $979,048
Secure America Now $501,533
MoveOn $166,891
Numbers USA $115,051