Mitt Romney has a six-point lead on President Barack Obama, according to a Gallup poll of likely voters released Wednesday. He leads 51-45 among likely voters, and 48-46 among registered voters, according to a seven-day average.
Gallup's margin is large among recent polls; seven other national polls released in the last two days show margins varying from +3 Obama to +4 Romney.
The Gallup poll showed Romney at 50-46 on Tuesday and 49-47 on Monday.
The numbers do not reflect Tuesday night's debate, in which many observers concluded that Obama had a stronger performance than Romney, if only slightly.
In the first week of October, Romney was tied with Obama at 48 percent each, according to Gallup, which recently announced changes to its survey methodology.
This story has been updated to add context about earlier Gallup polling.