My area MP is an out and out "Yes" man, given he has been a PPS to someone in the Home Office (so had to vote yes on ID cards, and stuff), and now a minister somewhere under Lord Mandelson, but even before he was so closely tied into the government, his voting record shows a tiny number (3) of votes against his party, as if he was one of the braindead politicians who cannot see right from wrong.
I assume most MPs feel they have to vote with their party, if only because they risk the wrath of the whips, their local party members, and to some extent, perhaps feel concern about how hostile things might be at home in the constituency where their partner {and probably some children} are living.
We've this week seen a bunch of politicians start campaigning, leaving a smaller number to debate and vote on bills, to simply "rush them through".
Last night saw the passing of the Digital Economy Bill, which many felt had too little scrutiny, and about which Mark Steel has put up a great video (about 10 minutes).
There will have been a number of compromises made (such as the removal of the 50p/month levy) just to get the bill passed into law without other parties talking for hours to block it.
However the central point, where party whips are concerned, is that they remove the option for an MP to listen to the public and reflect on their views, then make her/his own mind up, and feel confident that they can answer critics without needing to pluck some party line out to account for voting this way, or that.
So much seems now to be centrally controlled, these MPs are almost puppets on strings, voting in particular being one of the most transparent aspects, but being pushed to answer the public and have their comments criticised by the public, maybe one part of this Digital bill is that in future there will be fewer dissenting voices, as your internet access might be stopped, and any web site you build/ contribute to, could be blocked.
As the woman from Liberty on Mark Steel's video commented, what was suggested and what actually happened were two radically different things, and not good.
A sorry tale if the MPs and future government turn these "flexible" bills to their own ends, with the risk of "blackmail" for any MPs that want to step out of line and question the party view.