The group is dropping all television ads after Tuesday and has ceased online efforts to save Lugar. AAN has bombarded the airwaves for weeks with television ads hammering conservative challenger Richard Mourdock.
Despite the heavy spending on behalf of Lugar the senior senator has fallen behind in polling in the May 8 election, prompting AAN to abandon Lugar.
"We've decided we're going to let this race play out," AAN spokesman Dan Consto tells POLITICO.
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