When you combine the fact that Democratic presidential nominees are winning fewer states with the fact that there is more straight ticket-voting, the Democrats have a major problem on their hands. It’s simply going to get harder here on in to win a Senate majority, let alone a super-majority of 60 seats, which a party really needs to overcome the growing use of the filibuster.

The Democrats who are in “red” states recognize this fact and you saw it this week in the gun ownership background checks amendment vote. The four Democrats who bucked their party line were from states more Republican than the nation as a whole in the last presidential election. Three of the four are up for re-election in 2014. Of the red state Democrats running for re-election in 2014, three of five voted against the Manchin-Toomey compromise.

Just as bad for Democratic legislation is that there are no Republicans out there willing to compromise. Only 16% of the Republican Senate caucus comes from states where Obama won by a greater percentage than he won nationally. The percentage of blue state Republicans is also down by about half from the 28% it stood at after the 1992 elections. The Republicans who are elected now come from red states and just have no electoral need to compromise. If anything, they’re more fearful of a primary challenge from a stricter conservative.