About CO-04: Mason-Dixon polled a generic Other candidate @ 7%, which I'm sure you noticed. Usually, in polling, when refering to a generic Other candidate, you get a higher % than when you actually poll the name of the candidate unless that person has significantly higher name recognition.
I did notice that but it's unclear how they asked the question/s to arrive at the 7% other. I did make CO-04 a bit more secure on my own lists though. Here's the latest ordering of Toss Ups and Leans.
Lean Democratic
1 (AZ-08) Kolbe*
2 (TX-22) DeLay*
3 (FL-16) Foley*
4 (CO-07) Beauprez*
5 (PA-10) Sherwood
6 (NY-26) Reynolds
7 (IN-08) Hostettler
8 (IN-02) Chocola
9 (IA-01) Nussle*
10 (PA-06) Gerlach
Toss Up
11 (NY-24) Boehlert*
12 (NC-11) Taylor
13 (CT-02) Simmons
14 (IN-09) Sodrel
15 (KY-04) Davis
16 (IL-06) Hyde*
17 (PA-07) Weldon
18 (OH-15) Pryce
19 (NM-01) Wilson
20 (CT-04) Shays
21 (OH-18) Ney*
22 (VA-02) Drake <<
23 (WA-08) Reichert
24 (OH-01) Chabot
25 (WI-08) Green*
26 (FL-22) Shaw
Lean Republican
27 (MN-06) Kennedy*
28 (PA-08) Fitzpatrick
29 (CT-05) Johnson
30 (NY-20) Sweeney
31 (FL-13) Harris*
32 (CO-04) Musgrave
33 (AZ-05) Hayworth
34 (OH-02) Schmidt
35 (WY-AL) Cubin
36 (NV-02) Gibbons*
37 (KY-03) Northup
38 (CA-11) Pombo
39 (NY-25) Walsh
40 (NV-03) Porter
41 (CO-05) Hefley*
42 (TX-23) Bonilla