"What is the split..."
You know, it's funny, but a LOT of people expected the favorable split (which does not include 60 members in the Senate needed to cloture discussion) to result in just a terrific amount of new legislation in the week after Obama's innauguration.
Right now there's a fair amount of "shock and awwwwwwww...." going on because all of this wonderous legislation either isn't happening, or it's still stuck in congress. The stimulus bill is a perfect example.
Then there's the fact that when it comes to the supposed split, there are more than a few Democrats who are far more pro-2nd amendment than some of their Republican counterparts.
Mark Warner and Jim Webb are both friends of the 2nd, for example.
The fact that the Democrats have a majority in both houses didn't immediately morph into a "We're going to pass every bit of legislation we talked about and screw the Republicans," which is exactly what some of Obama's supporters hoped.
Then, finally, there's a tremendous reinforcement object lesson that on-the-fence legislators are getting right now.
Firearms sales, including to first time buyers, are through the roof. There are many legislators, Republicans and Democrats alike, who are weighing the numbers they're seeing there against what happened to Gore in 2000 and translating that into how many votes they would potentially lose from those people were they to sign on to some new sweeping legislative intiative.