UNDATED (AP) - One new poll gives Barack Obama a 16-point lead over John McCain with a week left before the election. The Pew Research Center poll of registered voters finds Obama with the support of 52 percent of those surveyed. McCain has the backing of 36 percent. By a margin of 48-to-31 percent, more independent voters support Obama over McCain. Whites are split between the two, while blacks overwhelmingly support Obama. Another poll finds the gap smaller. The latest Gallup Poll daily tracking update gives Obama a lead of 7 percentage points -- 50 percent to 43 percent.
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