Poll-itics: Obama ahead by 4

By GottaLaff

Before a possible Biden Bounce:

The latest Washington Post/ABC News poll shows Sen. Barack Obama leading Sen. John McCain, 49% to 45%.

"The results show little movement from the last Post-ABC survey, conducted in mid-July, before Obama embarked on a highly publicized trip overseas and prior to a series of fierce exchanges between the campaigns. Other recent national polls also show only limited changes in the overall race heading into the conventions, although several of those surveys indicate an even-tighter race."

The poll was taken before Obama named Sen. Joe Biden as his running mate.