Analysis: Trump campaign has spent $0 on television advertising
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Less than 100 days before the general election, Donald TrumpDonald John TrumpAccuser says Trump should be afraid of the truth Woman behind pro-Trump Facebook page denies being influenced by Russians Shulkin says he has White House approval to root out 'subversion' at VA MORE has still not spent a dime on television advertising, even as Hillary ClintonHillary Diane Rodham ClintonWoman behind pro-Trump Facebook page denies being influenced by Russians Trump: CNN, MSNBC 'got scammed' into covering Russian-organized rally Pennsylvania Democrats set to win big with new district map MORE floods the airwaves with tens of millions of dollars in ad spending.

According to an analysis by NBC News, the Democratic presidential nominee's campaign has spent $52 million on television ads, many of which have been concentrated in the battleground states that will be critical in determining the outcome of the election. 

The Trump campaign, by comparison, has spent zero dollars. 

Even the two third-party presidential candidates, Green Party nominee Jill Stein and Libertarian Party nominee Gary JohnsonGary Earl JohnsonIf weed is no longer a crime, why are people still behind bars? Gary Johnson: Trump admin marijuana policy shift could cost him reelection When pro-Clinton trolls went after me during the election MORE, have outspent Trump, the GOP nominee. Stein’s campaign has spent $189,000, while Johnson’s campaign has spent $15,000. 

When outside groups are factored in, Clinton's advantage over Trump grows to $91 million to $8.2 million in TV ad spending. 

The largest pro-Clinton super-PAC, Priorities USA, has spent $37 million.  

Meanwhile, the largest pro-Trump super-PAC, Rebuilding America Now, has spent $5 million. The National Rifle Association has spent $3.2 million in TV advertising for Trump. 

The Trump campaign did not respond to a request for comment. 

His campaign has released several ads but has only pushed them on social media so far. 

It's not for lack of money — the Trump campaign raised $80 million in July and finished the month with $37 million on hand.

A report in National Journal released Monday found that the campaign has requested ad rates in 17 states, taking the first step in what could be an expanded presence on the airwaves.