Q. Are you in favour or against Australia becoming a republic?
| Jan 2010 | March 2011 | Total | Vote Labor | Vote Lib/Nat | Vote Greens | |
| In favour | 41% | 39% | 41% | 51% | 35% | 56% |
| Against | 32% | 34% | 33% | 21% | 45% | 19% |
| No opinion | 27% | 27% | 26% | 28% | 19% | 26% |
41% favour Australia becoming a republic and 33% are against – showing little change since this question was asked in January 2010. 26% have no opinion.
Those most in favour were men (51%), Greens voters (56%) and Labor voters (51%).
Those most against were aged 65+ (56%) and Liberal/National voters (45%).