Probability method	Quasi-probability birthday methods				Nonprobability–In household methods			Nonprobability–At home methods
	R-B-P	Most recent	MultiQ Most recent	Last	Next	Youngest adult	Youngest male/ Youngest female	MultiQ Youngest male/Youngest female	Youngest male/Youngest female	MultiQ Youngest male/Youngest female	Youngest male/Oldest female
Approve Obama	48.2	48.3	48.3	46.2	46.3	48.0	48.5	48.0	48.1	48.4	49.2
Disapprove Obama	51.8	51.7	51.7	53.8	53.7	52.0	51.5	52.0	51.9	51.6	50.8
Republican	27.6	27.5	27.0	29.3	28.9	29.1	27.1	28.6	27.7	28.5	27.9
Democrat	32.7	31.2	32.8	30.1	31.0	31.4	31.7	31.5	31.8	31.3	31.2
Independent	38.5	40.1	38.8	39.6	38.9	38.3	39.9	38.7	39.3	39.1	39.8
N	2,002	2,001	1,098	2,000	2,001	1,999	2,000	2,000	1,999	1,999	2,000