Age - Obama is running even better among voters under 30 years of age than did Kerry, who led Bush by 54% to 45% among voters younger than 30, according to 2004 national exit polls. Obama currently leads by 60% to 31% among this group.
Region - Compared with Kerry, Obama is running better in the Midwest and the West. Obama holds a small lead among Midwestern voters (48%-40%); four years ago, Bush narrowly carried voters in this region (51%-48%). Obama has a narrow edge in the West (51%-43%); in 2004, the West divided its votes nearly evenly between Bush and Kerry.
Gender - The gender gap is slightly larger today than it was four years ago on Election Day. McCain holds an eight-point lead among men but trails among women by 10 points. Bush beat Kerry by 11 points among men and trailed Kerry by three points among women. However, McCain holds a 48% to 41 lead over Obama among white women, who also backed President Bush over John Kerry - 55% to 44%.
Religion - McCain's support among white evangelical Protestants, a key Republican voter group, has inched up to 71% (Obama is supported by 21% of evangelicals). Based only on voters who express a preference between the two candidates, McCain's lead among evangelicals (77%-23%) is comparable to Bush's final margin among this group (78%-21%). McCain has a small edge among white Catholic voters, 48% to 41%. He also holds a clear lead among white Catholics who attend Mass at least weekly (52% McCain vs. 36% Obama). Four years ago, Bush beat Kerry 61% to 39% among this group.
http://people-press.org/report/450/presidential-race-remains-even