The margins continue to narrow for Obama, as he loses one today.

The details:

Obama also held a slim lead for most of June (averaging three percentage points), although he led by a six to seven point margin for three days at the start of June. The two candidates were tied for a brief period in late June, but the last time McCain held a significant lead over Obama was in early May.

More tomorrow…

Politics Gallup: Obama Leads By 3