(CNN) - A major super PAC supporting President Barack Obama's reelection argues in a campaign memorandum released Wednesday that recent polling shows their advertising strategies are working.
Priorities USA Action says internal polling shows what a recent survey of voters in battleground states found: that millions of dollars spent in support of Obama is helping him and hurting presumptive Republican nominee Mitt Romney in some key states.
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Three quarters of those battleground state voters who say a political ad has shifted their opinion in the presidential race say they now support Obama and 16% say they are leaning towards Romney, according to the USA Today/Gallup Poll released Monday.
Priorities has committed at least $10 million on ads airing in Colorado, Florida, Ohio, Pennsylvania and Virginia. Those ads include one which charges Romney profited heavily when companies owned by his financial firm went bankrupt.
"Priorities USA’s recent ad campaign on Romney’s record as CEO of Bain Capital had a clear negative impact on perceptions of Romney across a variety of metrics," the memo reads.
The group said their internal numbers showed Obama had a greater advantage over Romney in the markets in which they had been advertizing than in similar swing state markets in which their spots had not aired.
Over three quarters of swing state voters say they have seen a political ad on television in the last month, the USA Today/Gallup Poll showed, and most of those have seen a negative ad.
Groups - like Priorities and their Republican-leaning counterparts - are advertising primarily in the selected battleground states, and the poll showed their ads are affecting a small group within those states. Seven in 10 swing state voters said the ads confirmed their thinking, while 12% say they have no opinion and 8% say their views have changed.
- CNN's Kevin Bohn and Gregory Wallace contributed to this report