After nearly eight years of voting in virtual lock step with President Bush on everything from tax cuts to torture, House Republicans decided on Monday to break ranks on the survival of the nation’s financial system.

The rejected bailout bill that was on the floor after a weekend of hard negotiating was objectionable in many ways, but it was a Republican-generated bill and was improved from the administration’s original version. Sixty percent of House Democrats voted for the bill, enough to easily pass the measure if the Republicans had not decided to put on their display of pique and disarray.

The question now is whether the stock-market plunge that followed the House’s failure to lead  and a renewed credit freeze  will be enough to get the 133 Republicans who voted against the measure to change their minds. And, more important, whether the damage that the no vote has inflicted is readily reversible.

Republican no votes were rooted less in analysis or principle than in political posturing and ideological rigidity. The House minority leader, John Boehner, conceded as much: “While we were able to move the bill drastically to the right, it wasn’t good enough for our members.”