Date of survey Same-sex wording Gay marriage wording Difference
Overall 0.421 0.470 −0.048
(0.008) (0.009) (0.012)
n=3,504 n=3,417 t=−4.03
p=0.0001
April 2013 0.416 0.474 −0.0584
(0.027) (0.027) (0.039)
n=327 n=331 t=−1.51
p=0.1321
September 2013 0.360 0.478 −0.118
(0.027) (0.028) (0.039)
n=322 n=316 t=−3.03
p=0.0026
February 2014 0.415 0.418 −0.003
(0.023) (0.024) (0.033)
n=451 n=426 t=−0.096
p=0.9234
April 2014 0.394 0.500 −0.106
(0.028) (0.029) (0.040)
n=315 n=290 t=−2.64
p=0.0085
September 2014 0.498 0.464 0.034
(0.023) (0.023) (0.033)
n=464 n=455 t=1.03
p=0.3013
October 2014 0.391 0.479 −0.088
(0.023) (0.023) (0.032)
n=470 n=463 t=−2.72
p=0.0067
February 2015 0.410 0.481 −0.071
(0.026) (0.026) (0.037)
n=371 n=366 t=−1.95
p=0.0520
September 2015 0.439 0.456 −0.016
(0.022) (0.022) (0.031)
n=503 n=498 t=−0.52
p=0.6010
April 2016 0.452 0.511 −0.059
(0.030) (0.030) (0.0425)
n=281 n=272 t=−1.390
p=0.1651