(CNN) - Sen. Barack Obama’s lead in national polls has shrunk to one point, according to CNN’s latest “poll of polls.”
Sunday’s poll of polls shows Obama leading John McCain 44 to 43 percent.
Obama held a three-point lead in Saturday’s poll of polls. The senator from Illinois was leading McCain 45-42 percent.
"All of the surveys included in our national polling average were conducted at least in part during the Republican Convention," noted CNN Senior Political Researcher Alan Silverleib. "It's still too early to know exactly how much of a bounce McCain has received. That said, the daily tracking numbers indicate that the [Sarah] Palin pick has clearly energized the GOP's base. We have an extremely tight race for the White House on our hands."
CNN’s most recent poll of polls consists of three surveys: CBS (September 1-3), Gallup (September 4-6), and Diageo/Hotline (September 2-4). The poll of polls does not have a sampling error.
The Republican convention took place last week in St. Paul, Minnesota. Democrats held their convention during the last week of August in Denver, Colorado.