In the 112th Congress serving in years 2011 and 2012, all but six of the 242 Republican members plus two Democratic members of the U.S. House of Representatives, for a total of 238 – a majority of that body – as well as all but seven of the 47 Republican members plus one Democratic member of the U.S. Senate, for a total of 41, have signed the Taxpayer Protection Pledge.
In the version for the U.S. House of Representatives, the signer pledges to:[5]
ONE, oppose any and all efforts to increase the marginal income tax rates for individuals and/or businesses; and
TWO, oppose any net reduction or elimination of deductions and credits, unless matched dollar for dollar by further reducing tax rates.
In the version for state legislators, the signer pledges that:[6]
I will oppose and vote against any and all efforts to increase taxes.
http://en.wikipedia.org/wiki/...Tax_Reform#Taxpayer_Protection_Pledge