We hear that they have to vote the way their constituents would want. That they can't vote along with the rest of the Democrats on a lot of things.
I found this post at MyDD. Someone has done an excellent analysis of the Blue Dogs and their districts.
The natural assumption is that many of the 43 members of the Blue Dog Coalition would be from these "marginal" districts and constantly legislating in fear of whisker-close elections. However, most of these legislators had large margins of victory in 2006 (including three that ran unopposed) and many have been members of the house for significant periods of time (allowing them the almost insurmountable advantage of incumbency).
I am not familiar with the politics of any of these districts and do not know how important conservative positions on the war are to continuing electoral success in the district. It is certainly reasonable to assume that these congresspersons are popular in their districts (often overwhelmingly so) at least in part because of their conservative positions. Indeed, some of these members may, in fact, genuinely believe in the positions they espouse. However, we are also entitled to wonder what the results would be if a candidate with more progressive positions ran in these districts. And, at least, this information raises the question of just how "marginal" these districts really are.
He has done a good analysis here:
How Marginal are the Blue Dog Districts? There is a chart, which does not lend itself to copy/paste. But there is this list.
31 Reps (72% - including 3 unopposed) had margins of victory in double digits
16 Reps (37% - with an asterisk *) were mentioned by Matt in an earlier article as refusing to vote for a supplemental appropriations bill with a fixed withdrawal date)
15 Reps (35%) are from southern states (11 states of the CSA) - contrary to the myth that the Blue Dogs are a southern phenomenon
14 Reps (33%) have been serving 10 years or more and NONE of them had close races in 2006
8 of the 12 Reps (18%) with margins of victory under 10% opposed a fixed withdrawal date
7 Reps (16% - with a $) were released to vote against the compromise supplemental appropriations bill (HR 1591)
Be sure to read the chart. Allen Boyd, one of the most conservative, has been unopposed for 10 years.
Gene Taylor of MS won with a huge margin: 80% of the vote over his opponent.
Jim Cooper of TN won with 69% of the vote.
Earl Pomeroy won with 66& of the vote.
Ellsworth and Salazer each had 61% of the vote.
Many were much closer. Be sure to read the chart.
Good post with thoughtful stuff.