Keeping tabs one which Republicans have broken with their party's anti-tax orthodoxy.
A poll finds overwhelming opposition to an anti-tax pledge, but is it an accurate gauge of the pledge at the center of "Fiscal cliff" debates?
Norquist himself has suggested that not renewing tax cuts doesn't constitute a violation of his pledge.
The first-term senator from North Carolina is expected to be one of the GOP's top targets in two years.
A look at how voters responded to George H.W. Bush's move toward tax increases.
A look back at a 2011 profile of the anti-tax advocate.