Meet your new thread, same as the old thread.

[SlaveNoMore]

LessinSF
Murder rates for states with the death penalty vs. states without the death penalty:

States with the Death Penalty
Nevada - 9.0
Alabama - 8.3
Arizona - 7.5
Arkansas - 7.3
California - 6.8
Colorado - 3.3
Connecticut - 3.1
Delaware - 4.9
Florida - 6.2
Georgia - 6.4
Idaho - 6.1
Indiana - 5.8
Illinois - 6.1
Kansas - 4.6
Kentucky - 4.0
Louisiana - 12.4
Maryland - 9.7
Mississippi - 7.7
Missouri - 6.3
Montana - 1.8
Nebraska - 2.8
New Hampshire - 1.0
New Jersey - 4.9
New Mexico - 6.8
North Carolina - 6.1
Ohio - 4.7
Oregon - 2.3
Oklahoma - 5.8
Pennsylvania - 5.9
South Carolina - 8.3
South Dakota - 1.2
Tennessee - 6.8
Texas - 5.9
Utah - 1.8
Virgina - 5.2
Washington - 3.0
Wyoming 1.7

States Without the Death Penalty:
Alaska - 5.4
Hawaii - 1.6
Iowa - 1.8
Maine - 1.7
Massachusetts - 2.9
Michigan - 7.1
Minnesota - 2.4
North Dakota - 1.3
Rhode Island - 2.6
Vermont - 1.9
West Virginia - 4.1
Wisconsin - 3.0

New York (law declared unconstitutional in 2004) - 4.8

A different inference (from the one I assume you are trying to make) is that the states without the death penalty merely have fewer incidents of crime, and thus they have yet to feel the need to write it into law.