Donald Trump outreach to female voters does not appear to be working in many of the states that will decide the fate of his presidential bid, according to a new poll by the American Association of Retired Persons (AARP).

The Republican presidential hopeful is polling 15 percentage points behind Hillary Clinton in more than a dozen battleground states including, but not limited to: Florida, Wisconsin, North Carolina, Ohio, Pennsylvania and Virginia. Forty-eight percent of women age 50 and older and living in swing states currently back Clinton, compared to 33 percent who support Trump. An additional 19 percent of women remain undecided.

Additionally, 52 percent of respondents said Clinton would do a better job leading the country and preserving Social Security benefits, while 34 said Trump would do a better job. The poll was released Wednesday at a forum on Social Security, which remains a key issue for older voters.

Trump has vowed to "save Social Security and Medicare without cuts" to either throughout the course of his campaign, putting him at odds with his running mate, Indiana Gov. Mike Pence, who has a history of supporting cuts to taxpayer-funded retirement benefits. Clinton has also pledged not to trim Social Security benefits and she has strongly opposed a partial or full privatization of the program.

Both major party candidates have suffered nearly identical low favorability ratings, but a recent national survey by Public Policy Polling found that Clinton has a net-positive rating among women — 50 percent favorable to 46 percent unfavorable. Just shy of 60 percent of women in the same survey held a negative view of Trump, compared to 35 percent who viewed him favorably.

The survey of 1,500 likely women voters in 15 battleground states was conducted between Aug. 1-7. Results contain a margin of error plus or minus 2.5 percentage points.