Not sure how current, or accurate this is, but I think it gives a pretty good measure of how residents of various states view hybrid cars (and, probably, by extension, electric cars):
State | Population | Prius Owners | Number of Persons for every Prius
Vermont - 625,741 - 3,924 - 159
California - 37,253,956 - 223,526 - 167
Oregon - 3,831,074 - 20,248 - 189
District of Columbia - 601,723 - 2,939 - 205
Washington - 6,724,540 - 32,840 - 205
New Hampshire - 1,316,470 - 5,692 - 231
Massachusetts - 6,547,629 - 27,134 - 241
Virginia - 8,001,024 - 31,144 - 257
Maryland - 5,773,552 - 22,164 - 260
Colorado - 5,029,196 - 18,054 - 279
Connecticut - 3,574,097 - 12,797 - 279
Maine - 1,328,361 - 4,602 - 289
Arizona - 6,392,017 - 21,919 - 292
Hawaii - 1,360,301 - 4,355 - 312
Rhode Island - 1,052,567 - 3,289 - 320
New Mexico - 2,059,179 - 5,937 - 347
Minnesota - 5,303,925 - 14,891 - 356
Wisconsin - 5,686,986 - 15,783 - 360
Delaware - 897,934 - 2,414 - 372
Montana - 989,415 - 2,555 - 387
New Jersey - 8,791,894 - 21,438 - 410
Illinois - 12,830,632 - 30,611 - 419
Florida - 18,801,310 - 43,175 - 435
Nevada - 2,700,551 - 6,031 - 448
North Carolina - 9,535,483 - 20,920 - 456
Pennsylvania - 12,702,379 - 27,711 - 458
Iowa - 3,046,355 - 6,490 - 469
Kansas - 2,853,118 - 5,944 - 480
New York - 19,378,102 - 39,741 - 488
Oklahoma - 3,751,351 - 7,509 - 500
Alaska - 710,231 - 1,401 - 507
Idaho - 1,567,582 - 3,071 - 510
Utah - 2,763,885 - 5,240 - 527
Missouri - 5,988,927 - 11,196 - 535
Wyoming - 563,626 - 1,035 - 545
Indiana - 6,483,802 - 11,698 - 554
Ohio - 11,536,504 - 20,336 - 567
Arkansas - 2,915,918 - 4,700 - 620
Texas - 25,145,561 - 40,098 - 627
South Dakota - 814,180 - 1,266 - 643
Nebraska - 1,826,341 - 2,749 - 664
Georgia - 9,687,653 - 14,270 - 679
Michigan - 9,883,640 - 13,727 - 720
Tennessee - 6,346,105 - 8,650 - 734
South Carolina - 4,625,364 - 6,188 - 747
Kentucky - 4,339,367 - 5,713 - 760
West Virginia - 1,852,994 - 2,435 - 761
Alabama - 4,779,736 - 5,647 - 846
North Dakota - 672,591 - 707 - 951
Louisiana - 4,533,372 - 4,253 - 1,066
Mississippi - 2,967,297 - 2,101 - 1,412