Gallup Daily reports that based on October 9-11 polling, Barack Obama’s lead over John McCain is waning.  Obama led by double-digits for three consecutive days last week, but now his advantage is down to seven percentage points. Obama has led in each of the last three individual days’ polling, but by less than double-digits each day, suggesting that the race is, in fact, tightening.

Obama’s advantage is slightly less when estimating the preferences of likely voters, which Gallup will begin reporting on a regular basis between now and the election. Gallup is providing two likely voter estimates to take into account different turnout scenarios.

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