How many Republicans have pledged allegiance to Grover Norquist over their constituents or the Constitution?

How can you accept this behavior in light of the fact that economic conditions are constantly changing?

2 Democratic and all Republican Senators plus 275 Representatives are known to have signed the pledge.

A quote from another show
That was Vice President Biden just after the latest round of 2012 federal budget negotiations earlier this week. Those negotiations include Republican Senator Jon Kyl and House Majority Leader Eric Cantor, two of the 275 members of Congress and the Senate who have signed Grover Norquist‘s pledge.

That pledge binds those members of Congress to oppose any form of tax increase. It is no surprise then that House Majority Leader Eric Cantor emerged from the Biden negotiations and told reporters this House will not support tax hikes.