You're missing a couple years he got a few votes and/or was considered for the Norris. The way this is represented may make it seem like, on the surface, Leetch was raking in votes in a lot of the years you listed where he had a low ranking in Norris voting - and may end up distorting and distracting from how few votes he garnered in those years.
EDIT: Same could be said of Park's 2nds. Also, Park wasn't 4th in 73; he was tied for 3rd. Not sure why you include Leetch's trade year but not Park's. Yea, Leetch played more games with NYR that season, but it was still a partial season with NYR nonetheless.
Here is this same info with complete voting results in the years Leetch and Park were in the mix for the Norris (historical award voting info can be found here -- HUGE props to BM67 and the rest of those guys for putting it together:
http://hfboards.mandatory.com/showthread.php?t=145895&page=5)
Brad Park:
68-69 - No votes; rookie season.
69-70 NORRIS: (319/324)
1. Bobby Orr, Bos 180
2. Brad Park, NYR 58
3. Carl Brewer, Det 22
4. Jacques Laperriere, Mtl 18
5. Jim Neilson, NYR 11
6. Al Arbour, StL 9
7. Pat Stapleton, Chi 8
T8. Wayne Connelly, Det 3
T8. Keith Magnuson, Chi 3
T8. Doug Mohns, Chi 3
T11. Doug Jarrett, Chi 2
T11. Barclay Plager, StL 2
70-71 NORRIS: (378/378)
1. Bobby Orr, Bos 208
2. Brad Park, NYR 57
3. J.C. Tremblay, Mtl 35
4. Pat Stapleton, Chi 23
T5. Bob Baun, Tor 10
T5. Keith Magnuson, Chi 10
7. Bill White, Chi 9
T8. Dallas Smith, Bos 6
T8. Jim Neilson, NYR 6
10. Rod Seiling, NYR 5
11. Ted Harris, Min 4
12. Tim Horton, NYR 3
T13. Jim Roberts, StL 1
T13. Don Awrey, Bos 1
71-72 NORRIS: (378/378)
1. Bobby Orr, Bos 204
2. Brad Park, NYR 117
3. Bill White, Chi 25
4. Pat Stapleton, Chi 16
5. J.C. Tremblay, Mtl 8
6. Dallas Smith, Bos 3
T7. Barclay Plager, StL 1
T7. Gary Bergman, Det 1
T7. Gilles Marotte, LA 1
T7. Rod Seiling, NYR 1
T7. Ted Harris, Min 1
72-73 NORRIS: (432/432)
1. Bobby Orr, Bos 224
2. Guy Lapointe, Mtl 58
T3. Bill White, Chi 36
T3. Brad Park, NYR 36
5. Jacques Laperriere, Mtl 25
6. Serge Savard, Mtl 22
7. Rod Seiling, NYR 11
8. Dave Burrows, Pit 6
T9. Tim Horton, Buf 4
T9. Terry Harper, LA 4
T11. Gary Bergman, Det 2
T11. Larry Hillman, Buf 2
T13. Pat Stapleton, Chi 1
T13. Barclay Plager, StL 1
73-74 NORRIS: (432/432)
1. Bobby Orr, Bos 236
2. Brad Park, NYR 98
3. Bill White, Chi 44
4. Barry Ashbee, Phi 11
5. Borje Salming, Tor 10
6. Guy Lapointe, Mtl 8
7. Denis Potvin, NYI 6
8. Dave Burrows, Pit 4
T9. Ed Van Impe, Phi 3
T9. Jacques Laperriere, Mtl 3
T9. Keith Magnuson, Chi 3
T12. Serge Savard, Mtl 1
T12. Jocelyn Guevremont, Van 1
T12. Barclay Plager, StL 1
T12. Larry Robinson, Mtl 1
T12. Terry Harper, LA 1
T12. Phil Russell, Chi 1
74-75 NORRIS: (486/486)
1. Bobby Orr, Bos 266
2. Denis Potvin, NYI 99
3. Guy Lapointe, Mtl 45
4. Borje Salming, Tor 31
5. Serge Savard, Mtl 14
T6. Don Awrey, Stl-Mtl 6
T6. Jerry Korab, Buf 6
8. Brad Park, NYR 5
9. Terry Harper, LA 4
10. Jim Schoenfeld, Buf 3
T11. Carol Vadnais, Bos 2
T11. Ed Van Impe, Phi 2
T13. Dave Burrows, Pit 1
T13. Larry Robinson, Mtl 1
T13. Ron Stackhouse, Pit 1
Only 13 Games with NYR 75-76 NORRIS: (486/486)
1. Denis Potvin, NYI 237
2. Brad Park, NYR/Bos 96
3. Borje Salming, Tor 56
4. Guy Lapointe, Mtl 39
5. Serge Savard, Mtl 23
6. Jimmy Watson, Phi 13
7. Dave Burrows, Pit 8
8. Jean Potvin, NYI 5
T9. Terry Harper, Det 3
T9. Andre Dupont, Phi 3
T11. Dallas Smith, Bos 1
T11. Don Awrey, Mtl 1
T11. Larry Robinson, Mtl 1
---
Brian Leetch:
87-88 - No votes. First NHL games played. Only played a partial season (17 games).
88-89 NORRIS:
Chris Chelios, Mtl 226 (37-12-5)
Paul Coffey, Pit 115 (14-14-3)
Al MacInnis, Cgy 57 (3-10-12)
Ray Bourque, Bos 56 (3-8-17)
Steve Duchesne, LA 30 (2-5-5)
Brad McCrimmon, Cgy 24 (2-4-2)
Gary Suter, Cgy 15 (2-1-2)
Kevin Lowe, Edm 14 (0-4-2)
Phil Housley, Buf (0-2-5)
Scott Stevens, Wsh 8 (0-1-5)
Brian Leetch, NYR 6 (0-1-3)
Paul Reinhart, Van 4 (0-1-1)
Craig Ludwig, Mtl 1 (0-0-1)
89-90 NORRIS:
Ray Bourque 315 (63-0-0)
Al MacInnis 127 (0-38-13)
Doug Wilson 40 (0-7-19)
Paul Coffey 33 (0-7-12)
Phil Housley 32 (0-7-11)
Al Iafrate 8 (0-2-2)
Mike Ramsey 4 (0-1-1)
Chris Chelios 3 (0-1-0)
Paul Cavallini 2 (0-0-2)
Craig Ludwig 1 (0-0-1)
Brian Leetch 1 (0-0-1)
Jamie Macoun 1 (0-0-1)
90-91 NORRIS:
Ray Bourque 257 (35-27-1)
Al MacInnis 228 (27-28-9)
Chris Chelios 56 (2-9-19)
Brian Leetch 30 (2-0-20)
Paul Coffey 8 (0-0-8)
Kevin Hatcher 7 (0-1-4)
Scott Stevens 6 (0-1-3)
James Patrick 2 (0-0-2)
91-92 NORRIS:
Brian Leetch 335 (65-3-1)
Ray Bourque 112 (3-25-22)
Phil Housley 82 (0-21-19)
Scott Stevens 44 (1-9-12)
Larry Murphy 37 (0-9-10)
Chris Chelios 8 (0-2-2)
Kevin Hatcher 2 (0-0-2)
Al MacInnis 1 (0-0-1)
92-93 -- No votes; injury year.
93-94 NORRIS:
Ray Bourque 199 (26-21-6)
Scott Stevens 195 (24-23-6)
Al MacInnis 60 (4-6-22)
Sergei Zubov 15 (0-2-9)
Brian Leetch 10 (0-2-4)
Chris Chelios 3 (0-0-3)
Paul Coffey 1 (0-0-1)
Nicklas Lidstrom 1 (0-0-1)
Sandis Ozolinsh 1 (0-0-1)
Larry Murphy 1 (0-0-1)
94-95 NORRIS: - No votes (sort of; see below)
Due to conference-only play the 94-95 voting was conducted in two stages. An east/west vote gave 3 finalists, (6 for all-star defense) from each conference, which were then voted on by a committee of 15 PHWA members.
Paul Coffey 69 (12-3-0)
Chris Chelios 39 (2-9-2)
Ray Bourque 20 (1-1-12)
Larry Murphy 7 (0-2-3)
Steve Duchesne 0 (0-0-0)
Brian Leetch 0 (0-0-0)
95-96 NORRIS: Switched to 5th place voting.
Chris Chelios 408 (22-19-9-3-1)
Ray Bourque 403 (23-16-8-7-0)
Brian Leetch 245 (6-6-23-7-7)
Vladimir Konstantinov 131 (2-6-7-10-4)
Paul Coffey 83 (0-4-2-12-9)
Nicklas Lidstrom 54 (0-1-3-7-11)
Roman Hamrlik 25 (1-0-0-3-6)
Gary Suter 11 (0-0-1-0-6)
Eric Desjardins 9 (0-1-0-0-2)
Scott Stevens 9 (0-0-0-2-3)
Teppo Numminen 7 (0-1-0-0-0)
Mark Tinordi 5 (0-0-1-0-0)
Sergei Zubov 5 (0-0-0-1-2)
Phil Housley 3 (0-0-0-1-0)
Larry Murphy 3 (0-0-0-1-0)
Shawn Chambers 1 (0-0-0-0-1)
Calle Johansson 1 (0-0-0-0-1)
Ed Jovanovski 1 (0-0-0-0-1)
96-97 NORRIS:
Brian Leetch 494 (42-8-3-1-0)
Vladimir Konstantinov 178 (2-10-13-6-5)
Sandis Ozolinsh 176 (2-12-9-8-3)
Chris Chelios 172 (0-7-18-9-6)
Scott Stevens 171 (7-8-4-7-4)
Nicklas Lidstrom 60 (0-5-2-3-6)
Darryl Sydor 45 (1-1-1-5-8)
Ray Bourque 45 (0-2-2-4-9)
Eric Desjardins 21 (0-1-0-3-5)
Oleg Tverdovsky 9 (0-0-1-1-1)
Bryan Berard 8 (0-0-0-2-2)
Kevin Hatcher 6 (0-0-0-2-0)
Sergei Zubov 5 (0-0-1-0-0)
Robert Svehla 4 (0-0-0-1-1)
Steve Duchesne 3 (0-0-0-1-0)
Chris Pronger 3 (0-0-0-1-0)
Derian Hatcher 2 (0-0-0-0-2)
Sergei Gonchar 1 (0-0-0-0-1)
Dmitri Mironov 1 (0-0-0-0-1)
97-98 - No votes.
98-99 NORRIS:
Al MacInnis 548 (54-0-1-1-0)
Nicklas Lidstrom 234 (0-21-9-13-3)
Ray Bourque 157 (0-9-12-8-10)
Chris Pronger 107 (1-5-9-3-8)
Eric Desjardins 91 (0-6-4-6-11)
Scott Stevens 55 (0-3-4-4-2)
Derian Hatcher 53 (0-4-3-24)
Brian Leetch 49 (0-2-3-5-5)
Fredrik Olausson 48 (0-1-5-4-4)
Phil Housley 40 (1-2-1-3-2
Larry Murphy 21 (0-1-1-3-0)
Scott Niedermayer 18 (0-2-0-1-1)
Sergei Zubov 12 (0-0-1-2-1)
Aleksander Karpovtsev 6 (0-0-1-0-1)
Adam Foote 5 (0-0-1-0-0)
Darryl Sydor 5 (0-0-1-0-0)
Rob Blake 4 (0-0-0-1-1)
Chris Chelios 1 (0-0-0-0-1)
Darryl Shannon 1 (0-0-0-0-1)
99-00 - No votes
00-01 NORRIS:
Nicklas Lidstrom, DET 600 (56-5-1-0-0)
Ray Bourque, COL 251 (4-16-12-10-9)
Scott Stevens, N.J. 203 (1-15-14-4-6)
Rob Blake, L.A.-COL 176 (1-11-8-14-7)
Brian Leetch, NYR 126 (0-9-7-5-13)
Sergei Gonchar, WSH 94 (0-1-9-12-6)
Al MacInnis, STL 49 (0-0-6-5-4)
Sergei Zubov, DAL 28 (0-1-1-4-4)
Brian Rafalski, N.J. 26 (0-2-1-2-1)
Eric Desjardins, PHI 14 (0-2-0-0-0)
Chris Pronger, STL 14 (0-0-1-2-3)
Wade Redden, OTT 13 (0-0-1-2-2)
Derian Hatcher, DAL 9 (0-0-1-1-1)
Dan McGillis, PHI 4 (0-0-0-1-1)
Ed Jovanovski, VAN 2 (0-0-0-0-2)
Brad Lukowich, DAL 1 (0-0-0-0-1)
Jason Smith, EDM 1 (0-0-0-0-1)
Oleg Tverdovsky, ANA 1 (0-0-0-0-1)
01-02 NORRIS:
Nicklas Lidstrom, Det 472 (29-20-7-2-1)
Chris Chelios, Det 431 (28-10-13-4-4)
Rob Blake, Col 321 (4-19-22-12-2)
Sergei Gonchar, Was 147 (0-6-6-22-9)
Chris Pronger, StL 62 (0-4-1-8-5)
Ed Jovanovski, Van 53 (0-0-7-3-9)
Teppo Numminen, Phx 44 (0-1-3-5-7)
Adrian Aucoin, NYI 28 (1-1-0-2-5)
Brian Leetch, NYR 22 (0-0-1-2-11)
Mattias Ohlund, Van 5 (0-0-1-0-0)
Scott Stevens, N.J. 5 (0-0-1-0-0)
02-03 NORRIS:
Nicklas Lidstrom 560 (42-20-0-0-0)
Al MacInnis 486 (20-38-4-0-0)
Derian Hatcher 142 (0-1-21-9-3)
Sergei Gonchar 131 (0-1-12-17-13)
Rob Blake 62 (0-0-8-5-7)
Ed Jovanovski 58 (0-2-5-5-4)
Zdeno Chara 55 (0-0-4-10-5)
Sergei Zubov 37 (0-0-3-4-10)
Wade Redden 21 (0-0-2-2-5)
Adam Foote 18 (0-0-1-3-4)
Tomas Kaberle 9 (0-0-0-3-0)
Dan Boyle 8 (0-0-0-2-2)
Scott Niedermayer 7 (0-0-1-0-2)
Eric Desjardins 6 (0-0-0-1-3)
Brian Leetch 5 (0-0-1-0-0)
Scott Stevens 5 (0-0-0-1-2)
Chris Chelios 1 (0-0-0-0-1)
Sandis Ozolinsh 1 (0-0-0-0-1)
03-04 NORRIS: (played partial season with NYR - 57 games; ended season with Toronto)
Scott Niedermayer, NJD 872 (72-13-10-3-2)
Zdeno Chara, OTT 563 (19-36-16-11-8)
Chris Pronger, STL 345 (7-19-16-17-11)
Bryan McCabe, TOR 189 (1-12-10-10-15)
Adrian Aucoin, NYI 166 (2-3-12-16-17)
Nicklas Lidstrom, DET 165 (1-6-10-19-6)
Mathieu Schneider, DET 144 (1-2-17-7-14)
Rob Blake, COL 124 (1-8-5-9-6)
Sergei Gonchar, BOS 55 (0-3-4-4-2)
Wade Redden, OTT 31 (0-0-2-6-3)
Brian Leetch, TOR 19 (0-0-2-2-3)
Sheldon Souray, MON 12 (0-1-0-0-5)
Marek Malik, VAN 7 (0-1-0-0-0)
Mattias Ohlund, VAN 3 (0-0-0-0-3)
Pavel Kubina, TAM 2 (0-0-0-0-2)
Marek Zidlicky, NAS 2 (0-0-0-0-2)
Bryan Berard, CHI 1 (0-0-0-0-1)
Dan Boyle, TAM 1 (0-0-0-0-1)
Mike Rathje, SAN 1 (0-0-0-0-1)
Dick Tarnstrom, PIT 1 (0-0-0-0-1)
Sergei Zubov, DAL 1 (0-0-0-0-1)