Nate Silver discerns that Democrats won't be able to take advantage of the gun-control vote in the 2014 elections.

Lots of analysis. Bottom line:

[P]olls showing 90 percent support for background checks will tend to overstate how well the Democrats’ position might play out before the electorate in practice, though public opinion was on their side on this vote.

Moreover, few of the Republican senators who are up for re-election in 2014 are vulnerable for any reason.... In fact, the safety of the Senate Republicans may have enabled them to vote against the amendment, at least in part, for a tactical reason: to protect their colleagues in the House. This is not to suggest that Republicans are likely to lose the House — but there are 17 House Republicans in districts carried by President Obama last year. By preventing the background-check bill from securing the 60 votes necessary to pass the Senate, the Republicans may have prevented their House counterparts from having to take a tough vote....