"Voters over 65 favored Republicans last week by a 21-point margin after flirting with Democrats in the 2006 midterm elections and favoring John McCain by a relatively narrow 8-point margin in 2008."
Read more:
http://www.politico.com/news/stories/1110/44802.html#ixzz14i1wH1zU
Here is a chart from New York Times exit polls that makes the same point with different figures about the senior vote. In the chart it includes five years of non-seniors which lowers the percentage.
