Comparison of July and August presidential polls
In states that had polls in both months
Colorado
Rocky Mtn 08/11 - 08/13 500 RV 41 44 McCain +3
Rasmussen 08/13 - 08/13 700 LV 48 49 McCain +1
PPP (D) 08/05 - 08/07 933 LV 48 44 Obama +4
Quinnipiac 07/14 - 07/22 1425 LV 44 46 McCain +2
Rasmussen 07/21 - 07/21 500 LV 50 47 Obama +3
PPP (D) 07/09 - 07/10 1050 LV 47 43 Obama +4
Florida
InAdv/Poll 08/11 - 08/11 418 LV 48 44 McCain +4
SurveyUSA 08/01 - 08/03 679 LV 50 44 McCain +6
PPP (D) 07/30 - 08/02 800 LV 47 44 McCain +3
Quinnipiac 07/23 - 07/29 1238 LV 44 46 Obama +2
Rasmussen 07/22 - 07/22 500 LV 47 49 Obama +2
Iowa
Rasmussen 08/07 - 08/07 700 LV 49 44 Obama +5
Rasmussen 07/10 - 07/10 500 LV 51 41 Obama +10
Kansas
Rasmussen 08/11 - 08/11 500 LV 55 41 McCain +14
Rasmussen 07/14 - 07/14 500 LV 58 35 McCain +23
Kentucky
SurveyUSA 08/09 - 08/11 636 LV 55 37 McCain +18
Research 2000 07/28 - 07/30 600 LV 56 35 McCain +21
Rasmussen 07/29 - 07/29 500 LV 52 43 McCain +9
Maine
Rasmussen 08/12 - 08/12 500 LV 53 39 Obama +14
Rasmussen 07/17 - 07/17 500 LV 49 41 Obama +8
Michigan
Rasmussen 08/07 - 08/07 500 LV 49 45 Obama +4
PPP (D) 07/23 - 07/27 883 LV 46 43 Obama +3
Quinnipiac 07/14 - 07/22 1684 LV 46 42 Obama +4
Detroit News 07/13 - 07/16 600 LV 43 41 Obama +2
Rasmussen 07/10 - 07/10 500 LV 50 42 Obama +8
Minnesota
Rasmussen 08/13 - 08/13 700 LV 49 45 Obama +4
Quinnipiac 07/14 - 07/22 1261 LV 46 44 Obama +2
Rasmussen 07/22 - 07/22 500 LV 52 39 Obama +13
Rasmussen 07/10 - 07/10 500 LV 54 37 Obama +17
Missouri
Rasmussen 08/07 - 08/07 500 LV 50 44 McCain +6
SurveyUSA 07/29 - 07/31 1459 LV 49 44 McCain +5
Research 2000 07/07 - 07/10 800 LV 43 48 Obama +5
Rasmussen 07/07 - 07/07 500 LV 50 45 McCain +5
PPP (D) 07/02 - 07/05 723 LV 47 44 McCain +3
Nevada
Rasmussen 08/11 - 08/11 500 LV 48 45 McCain +3
Rasmussen 07/16 - 07/16 500 LV 45 47 Obama +2
New Jersey
Quinnipiac 08/04 - 08/10 1468 LV 51 41 Obama +10
Rasmussen 08/04 - 08/04 500 LV 52 42 Obama +10
Monmouth 07/17 - 07/21 698 LV 50 36 Obama +14
SV (R) 07/11 - 07/13 800 LV 47 38 Obama +9
Rasmussen 07/07 - 07/07 500 LV 47 44 Obama +3
New York
Rasmussen 08/04 - 08/04 500 LV 55 36 Obama +19
Quinnipiac 07/31 - 08/04 1353 LV 57 36 Obama +21
Siena 07/17 - 07/29 671 RV 44 26 Obama +18
Siena 07/07 - 07/10 626 RV 50 37 Obama +13
North Carolina
Rasmussen 08/13 - 08/13 700 LV 50 44 McCain +6
SurveyUSA 08/09 - 08/11 655 LV 49 45 McCain +4
Research 2000 07/28 - 07/30 600 LV 47 43 McCain +4
Civitas (R) 07/14 - 07/16 800 RV 43 40 McCain +3
Rasmussen 07/15 - 07/15 500 LV 48 45 McCain +3
SurveyUSA 07/12 - 07/14 676 LV 50 45 McCain +5
Oregon
Rasmussen 08/07 - 08/07 700 LV 52 42 Obama +10
SurveyUSA 08/02 - 08/04 629 LV 48 45 Obama +3
Rasmussen 07/15 - 07/15 500 LV 49 40 Obama +9
Pennsylvania
F & M 08/04 - 08/09 370 LV 46 41 Obama +5
Quinnipiac 07/23 - 07/29 1317 LV 49 42 Obama +7
SV (R) 07/25 - 07/27 1200 LV 49 40 Obama +9
Rasmussen 07/23 - 07/23 700 LV 51 45 Obama +6
Virginia
Rasmussen 08/12 - 08/12 500 LV 47 48 McCain +1
InAdv/Poll 08/12 - 08/12 416 LV 43 43 Tie
SurveyUSA 08/08 - 08/10 655 LV 47 48 McCain +1
PPP (D) 07/17 - 07/20 1327 LV 46 44 Obama +2
Rasmussen 07/16 - 07/16 500 LV 47 48 McCain +1
Washington
SurveyUSA 08/11 - 08/12 718 LV 51 44 Obama +7
Rasmussen 08/06 - 08/06 500 LV 54 42 Obama +12
Elway Poll 07/27 - 07/31 405 RV 47 35 Obama +12
SV (R) 07/25 - 07/27 800 LV 48 37 Obama +11
SurveyUSA 07/13 - 07/15 666 LV 55 39 Obama +16
Moore (R) 07/09 - 07/10 400 LV 47 37 Obama +10
Rasmussen 07/09 - 07/09 500 LV 51 43 Obama +8
Wisconsin
SV (R) 08/08 - 08/10 800 LV 47 42 Obama +5
Rasmussen 08/05 - 08/05 500 LV 51 44 Obama +7
WiscPRI 08/03 - 08/04 600 LV 44 38 Obama +6
Quinnipiac 07/14 - 07/22 1094 LV 50 39 Obama +11
Rasmussen 07/08 - 07/08 500 LV 52 42 Obama +10
http://www.realclearpolitics.com/...