Over at RCP Blog, Tom rounds up the new National Journal rankings of the most liberal and conservative members of Congress.

Here, a look at the most liberal Republicans and most conservative Democrats in each chamber:

Most Liberal Republicans: House
1. Mike Castle (DE)
2. John McHugh* (NY)
3. Dave Reichert (WA)
4. Joseph Cao (LA)
5. Mark Kirk (IL)

Most Conservative Democrats: House
1. Bobby Bright (AL)
2. Parker Griffith** (AL)
3. Gene Taylor (MS)
4. Travis Childers (MS)
5. Jim Marshall (GA)

Most Liberal Republicans: Senate
1. Olympia Snowe (ME)
2. Richard Lugar (IN)
3. Susan Collins (ME)
4. George Voinovich (OH)
5. Judd Gregg (NH)

Most Conservative Democrats: Senate
1. Evan Bayh (IN)
2. Ben Nelson (NE)
3. Arlen Specter (PA)
4. Russ Feingold (WI)
5. Jim Webb (VA)

*Retired to become Army secretary
**Switched to the GOP