What site has the most current result/margin?
The site you're on (or the Colorado SOS)
Its still a 2.5% margin, 48.5-46.0 according to all sources.
No, they haven't updated. Check the Colorado SOS or Dave Leip's data on this site for the most recent results. It went down to about a 2.1% lead.
One one hand, it's impressive that Mark Udall came pretty close despite running a poor campaign, Gardner running a perfect campaign, the environment being terrible and the media being very biased in Gardner's favor.
On the other hand, Udall still lost so a loss is a loss and a big name in Colorado politics did go down in flames. It's also embarrassing Udall won the suburbs and still lost. But candidates like Cory Gardner are few and far between so let's see how the GOP does against Michael Bennett in 2016.