Yes, and yes:
Unmarried womena group that includes single, separated, divorced, or widowed womenvoted for Obama over Republican opponent John McCain by a whopping 70 to 29 percent in yesterday's election, according to numbers released today by Women's Voices Women Vote, a nonpartisan organization.
Married women, by contrast, preferred McCain by a slim 3 percentage-point margin, 50 to 47 percent.
http://www.usnews.com/news/articles/2008/11/05/behind-obamas-victory-women-open-up-a-record-marriage-gap
Plus white women went 53% for McCain in 2008.