Q. Do you think the issue of same sex marriage should be decided by Parliament or should there be a national vote?
| Total | Vote Labor | Vote Lib/Nat | Vote Greens | Vote other | Aug 2015 | Sep 2015 | Mar 2016 | |||
| Should be decided by Parliament | 25% | 32% | 20% | 43% | 19% | 22% | 21% | 23% | ||
| Should have a national vote | 60% | 55% | 67% | 47% | 67% | 66% | 67% | 66% | ||
| Don’t know | 15% | 12% | 13% | 11% | 14% | 12% | 12% | 11% |
60% favour a national vote on same sex marriage and 25% think the issue should be decided by Parliament.
This represents a shift away from support for a national vote since this question was asked in March.