Obama	Romney	Undecided	Other	poll_slug	survey_house	start_date	end_date	question_text	sample_subpopulation	observations	margin_of_error	mode	partisanship	partisan_affiliation
40.0	54.0	3.0		mason-dixon-16371	Mason-Dixon	2012-10-26	2012-10-28		Likely Voters	625	4.0	Live Phone	Nonpartisan	None
38.0	55.0			pharos-research-group-16325	Pharos Research Group	2012-10-26	2012-10-28		Likely Voters	752	3.6	Live Phone	Nonpartisan	None
39.0	49.0			pharos-research-group-16246	Pharos Research Group	2012-10-19	2012-10-21		Likely Voters	807	3.44	Live Phone	Nonpartisan	None
40.0	54.0	4.0	2.0	rasmussen-16060	Rasmussen	2012-10-17	2012-10-18		Likely Voters	600	4.0	Automated Phone	Nonpartisan	None
32.0	57.0	10.0	1.0	essman-research-16064	Essman/Research	2012-10-12	2012-10-15		Likely Voters	500	4.4	Live Phone	Nonpartisan	None
40.0	54.0	5.0		mason-dixon-15618	Mason-Dixon	2012-10-03	2012-10-05		Likely Voters	625	4.0	Live Phone	Nonpartisan	None
39.0	51.0			dfm-research-d-nd-dems-npl-15399	DFM Research (D-ND Dems/NPL)	2012-09-24	2012-09-27		Likely Voters	600	4.0	Live Phone	Sponsor	Dem
35.0	54.0			dfm-research-d-nd-dems-npl-14480	DFM Research (D-ND Dems/NPL)	2012-07-24	2012-07-26		Likely Voters	400	4.9	Live Phone	Sponsor	Dem
36.0	51.0	7.0	6.0	rasmussen-14336	Rasmussen	2012-07-10	2012-07-11		Likely Voters	400	5.0	Automated Phone	Nonpartisan	None
39.0	52.0			mason-dixon-14040	Mason-Dixon	2012-06-04	2012-06-06		Likely Voters	625	4.0	Live Phone	Nonpartisan	None
32.0	51.0			dfm-research-d-dscc-13664	DFM Research (D-DSCC)	2012-04-18	2012-04-26		Registered Voters	478	4.5	Live Phone	Sponsor	Dem
33.0	47.0			mellman-group-d-dscc-12577	Mellman Group (D-DSCC)	2011-11-12	2011-11-16		Likely Voters	600	4.0	Live Phone	Pollster	Dem