Romney's leading margins compared to Obama's...
That goes all the way back to February, 2011. It shows you the margins each candidate has led on the average. Obama is blue, Romney is red.
You're seeing that right. Romney hasn't led in the average since October and only has led for a sliver of time in a year and a half stretch. He's never led in their average this year.
To put that into perspective, look at how many times Kerry led Bush from early 2004 to August 8th, 2004:
That's what a competitive race looks like. Bush and Kerry flipped for the entire first eight months of the election. It wasn't until late-August when Bush overtook him for good.
While the polls are close, Romney hasn't shown any ability to consistently lead Obama in the polls. Every time it looks like he might surge ahead of him, Obama regroups and builds a lead. That leaves a bunch of peaks and valleys, but it never leaves Obama underwater. Romney has been underwater since
OCTOBER.
The last candidate who went that long without leading his opponent? Bob Dole in 1996.
Even McCain briefly held the lead over Obama in January and again in March (and again in September).