By Bernie Becker - 04/04/12 07:51 PM EDT
To calculate its report card, NTU sifted through more than 500 votes from 2011 — 337 in the House and 234 in the Senate — that it said could have considerable impact on taxes, spending or regulatory policy.
In the Senate, NTU gave only 17 lawmakers grades below a B and above an F. The four senators who caucus with the Democrats and did not receive a failing grade — Joe Lieberman (Conn.), Claire McCaskill (Mo.), Ben Nelson (Neb.) and Joe Manchin (W.Va.) — all received Ds.
The scores were a bit less polarized in the House, but the six House Democrats from Maryland and the 10 from Massachusetts all received failing grades. The five Republicans from South Carolina, meanwhile, all received at least a B+.
Sen. Tom Coburn (R-Okla.) received a score of 96 percent, the highest in either chamber, with Sen. Ron Johnson (R-Wis.) just one percentage point behind.
Around 10 Republicans in the House got at least a 90 percent score from NTU.