pollster	simple_error	simpleplusminus	advancedplusminus	meanrevertedadvancedplusminus
The Washington Post	2.959489795918369	-1.8093944	-1.504779542	-1.143101709
Research & Polling Inc.	4.177045454545455	-1.344659127	-2.108597861	-1.213561122
OnMessage Inc.	3.262812499999998	-1.740878799	-2.040543567	-1.251357907
TIPP Insights	2.089215686274509	-1.820385721	-1.752448009	-1.227269413
Cygnal	3.912241379310344	-1.126526494	-1.682627848	-1.238250372
The New York Times/Siena College	4.017586206896551	-1.091978713	-1.141400413	-0.951024777
Monmouth University	5.719557251908396	-0.454273396	-1.196913915	-0.979469958
SurveyUSA	4.711176808266358	-0.881484603	-0.834137103	-0.793762945
CBS News/The New York Times	4.463939393939395	-0.966909209	-0.997948038	-0.532465449
AtlasIntel	2.455161290322581	-1.730132268	-0.773384656	-0.642681995
Public Opinion Strategies	5.4655	-0.146337471	-0.929935266	-0.601718052
Emerson College	4.672343750000001	-0.767756004	-0.931866134	-0.86934093
Siena College	5.108507462686566	-0.377496612	-0.842723091	-0.585620724
Muhlenberg College	3.705000000000001	-1.579538888	-1.855368928	-0.994663029
Hart Research Associates/Public Opinion Strategies	3.440000000000001	-1.430570568	-1.049228211	-0.586110652
Beacon Research/Shaw & Co. Research	4.845238095238093	-0.784963983	-0.64191149	-0.458669279
Grove Insight	2.954827586206897	-2.055768511	-2.510000801	-0.973970818
MassINC Polling Group	4.52	-1.493717717	-0.872132001	-0.386271305
Suffolk University	4.928125	-1.220178202	-0.72198479	-0.580870656
Susquehanna Polling & Research Inc.	4.965178571428571	-0.424738702	-0.816765453	-0.54775062
Mason-Dixon Polling & Strategy	5.136042600896854	-0.303075965	-0.610801327	-0.542412373
Greenberg Quinlan Rosner	4.485806451612904	-0.732551354	-0.518847417	-0.317514236
Landmark Communications	4.271951219512196	-0.976411112	-1.0245886	-0.596415144
Marist College	5.280281690140846	-0.687382801	-0.476821109	-0.417436108
Angus Reid Global	3.199999999999999	-1.553641635	-1.872996097	-0.855484732
Los Angeles Times	5.033513513513514	-1.353016899	-0.771926876	-0.255695525
University of Massachusetts Lowell	5.430263157894736	-0.466106635	-0.454371013	-0.282688346
Elway Research	3.863095238095239	-1.844226261	-2.561581035	-0.799556175
Tarrance Group	5.618750000000001	-0.558303178	-0.949914811	-0.443645202
Fairleigh Dickinson University	4.681818181818181	-0.577980855	-0.591611131	-0.212801869
Field Research Corp. (Field Poll)	4.103600000000001	-1.846496429	-2.196304044	-0.676760918
Garin-Hart-Yang Research Group	5.393333333333334	-0.141570627	-0.841310524	-0.412233102
OH Predictive Insights	3.885000000000002	-1.315702028	-1.112911546	-0.579279543
Opinion Dynamics	3.865000000000001	-1.109716827	-0.398560286	-0.13260566
Princeton Survey Research Associates International	5.002285714285713	-0.140476814	-0.211706974	-0.077308206
Lake Research Partners/The Tarrance Group	3.391515151515151	-1.1598517	-0.655486633	-0.234308228
Pharos Research Group	3.737272727272727	-1.142277144	-1.139319452	-0.494698913
Strategic Vision LLC	3.924473684210528	-1.187365753	-0.550662607	-0.368789269
GfK Group	3.901904761904762	-0.888638366	-0.424072292	-0.1278597
Quinnipiac University	4.719868996	-0.818437341	-0.168888344	-0.146735561
Selzer	5.714067796610168	-0.269036926	-0.021952284	-0.014477351
Franklin & Marshall College	5.952000000000001	0.003780031	-0.167695717	-0.072383787
KRC Research	6.835	0.042284956	-0.377023767	-0.070609089
Florida Atlantic University/Mainstreet Research	8.611599999999999	0.275613137	-1.107058749	-0.643638807
RKM Research and Communications Inc.	5.166857142857144	-1.267657864	-0.841506743	-0.355113898
Gallup	4.382738095238096	-0.660727183	.1656779829610847	0.092392281
EPIC-MRA	5.829827586206897	.2111438261749509	-0.72262594	-0.450830795
InsiderAdvantage	6.103028846153852	-0.114388851	-0.155797214	-0.138141534
Rasmussen Reports	5.060263488080305	-0.328842214	-0.132306591	-0.126017763
Pew Research Center	4.414400000000001	0.011934699	.4477332748329354	.1356490409017623
Public Policy Polling	5.161282051	-0.339832903	-0.027301282	-0.02532126
WPA Intelligence	6.783000000000001	.9328529085733255	-0.422032776	-0.171717809
University of Cincinnati (Ohio Poll)	4.198461538461538	-1.43733145	-0.82085571	-0.325560847
Research Co.	4.234823529411764	-0.61333974	-1.200286547	-0.962802899
Ciruli Associates	3.6245	-1.581906474	-1.632315131	-0.395352962
Mellman Group	4.834642857142859	-0.202173677	-0.577698138	-0.234239288
YouGov	5.056756238003834	-0.013428723	-0.012446122	-0.011761722
Civiqs	5.217674418604651	.1413895446472418	.1241565529224622	0.081692452
Research 2000	5.465143884892091	-0.037143008	-0.110941018	-0.090212798
Trafalgar Group	4.294405594	-0.455405153	.1756933168745884	.1521216663790597
Redfield & Wilton Strategies	3.554444444444445	-0.586848853	-0.154925266	-0.109369254
Ipsos	4.643706896551723	-0.127494482	-0.135427088	-0.10906895
RMG Research	5.914642857142857	1.349927685726056	-0.057433815	-0.031537246
co/efficient	5.493333333333333	.4271251516019022	-0.040825788	-0.021939911
Big Village	5.644392523364484	-0.390606214	.2656423070154262	.1942172576679782
Impact Research	6.072727272727272	.3031892243216545	0.063043423	0.024987825
Patriot Polling	2.753181818181818	-1.522998868	-0.507275976	-0.274017786
Market Shares Corp.	5.830799999999999	.4348691482627269	-0.564220075	-0.151921683
Lucid	4.1496	-0.191879049	.3586105702776998	.1574577382401942
RT Strategies	5.900444444444445	.4552983326470079	.3807415663225848	.1537136311364118
Gravis Marketing/Kaplan Strategies	5.145	0.08452289	.3729960338038558	.3138517892556822
Zogby Analytics	5.524787878787874	.2430118656745405	.4678052846618244	.4128624527887156
Google Consumer Surveys	5.337499999999999	1.448255998260183	1.627423220610401	.6503824580754038
Harris Insights & Analytics	5.022176165803109	.9385510628998368	.4939264595040465	.4223699570042289
Global Strategy Group	6.288846153846153	.6445028910698659	.5360734503788889	.1991482852591111
Dan Jones & Associates	6.076249999999999	.2314109305893789	.7227741081612059	.3341373859602621
Targoz Market Research	5.864230769230771	1.094123232146441	1.388438191	.7427889685073011
Columbus Dispatch	5.398181818181818	.2449942783323013	.8239143401004992	.2464141498521487
Remington Research Group	5.213454545454543	.9534799001526786	.7412210020735103	.5014063742713037
University of New Hampshire	5.952466666666666	.5397200926836879	.5777525477147668	.4867180380064316
Data for Progress	5.797631578947367	.5315756783923054	.5530638498980476	.4623875648784458
St. Pete Polls	5.518387096774196	.3699311454890872	1.082936043	.5943987201858272
Swayable	7.248876404	1.863962395126312	.9008545716089714	.7091304215479522
Morning Consult	4.419385964912281	.2580916676976788	.8257224474462694	.6969518399487002
Change Research	6.298347826086958	1.279786637123772	.8027758678641949	.6591064738260821
Digital Research	8.174761904761906	2.454870584004803	1.516776956902068	.4482726384365188
SSRS	5.182127659574467	.3767751967029457	.9207262234926311	0.629087473
Roanoke College	7.580000000000001	1.892614789957088	2.114285394949941	.9880999163289222
Market Research Insight	8.099259259259259	3.117371039680634	1.961727450099331	.7598543196920758
We Ask America	6.734107142857144	.7437799961552168	1.767081190244952	1.021773046
ccAdvertising	7.363333333333332	2.139545610953421	2.319557608925573	.9377366590033873
American Research Group	7.7305	.6763789707114154	1.406907115438475	1.210236112087174
Mitchell Research & Communications	6.720121951	1.060406629066476	1.282198449599483	.9467869196773171
McLaughlin & Associates	7.355172413793104	2.059667848514898	2.281470467656853	1.015930201557808
SoonerPoll.com	9.001538461538463	3.322373557484656	3.034984277247797	1.378972859611338
Merriman River Group	9.214399999999998	3.952181812646103	3.017277760059963	1.078153656793423
SurveyMonkey	6.643507463	2.489611763777837	1.793415761932108	1.615823234275223
TCJ Research	6.439924242424243	1.919607876925515	2.167963008176236	1.603295938098494