The AARP poll puts both men at 45% support. NBC's First Read says there are a couple of issues that are extremely important to this group of voters:
Per this poll, 91% believe “Social Security is critical to the economic security of seniors” and “the next president and Congress need to strengthen Social Security so that it is able to provide retirement security for future generations.” (That includes about three-quarters of Romney voters.) And on Medicare: 95% say “Medicare is critical to maintaining the health of seniors” and 88% say the next president and Congress “need to strengthen Medicare so that it is able to provide health coverage in retirement for future generations.”

