Opinion polling for the October 2021 Australian federal election

First preference polling
{| class="toccolours" cellpadding="5" cellspacing="0" style="text-align:center; margin-right:.5em; margin-top:.4em; font-size:90%;" ! rowspan="2"|Date ! style="background:#ccc" colspan="8"| Primary vote ! style="background:#ebbce3" colspan="2"| TPP vote ! style="background:#40c351;"|GRN ! style="background:#236cff;"LIB ! style="background:#fb4182;"|SDP ! style="background:#699b25;”|SGN ! style="background:#a9a9a9;"|Oth ! style="background:#236cff;;"|LIB ! style="background:#008b8b;"|UDP
 * Australian Labor Party Dissolved
 * 22 September 2019
 * 35.82% || 19.64% || 4.33% || 13.34% || || 12.12% || 5.37% || 9.38% || style="background:#236cff;"|56.84%|| 43.16%
 * 15 September 2019
 * 26.48%|| 25.89% || 14.62%|| || 10.19% || 10.25% || 4.57% || 8.00% || 47.27%|| style="background:#61A5A5;"|52.73%
 * colspan="12" | Social Democratic Party formed
 * 15 September 2019
 * 26.48%|| 25.89% || 14.62%|| || 10.19% || 10.25% || 4.57% || 8.00% || 47.27%|| style="background:#61A5A5;"|52.73%
 * colspan="12" | Social Democratic Party formed
 * colspan="12" | Social Democratic Party formed


 * colspan="12" | Southern Gippsland Network Formed and Revolutionary Socialist Party dissolved


 * 8 September 2019 
 * 26.76% || 26.94% || 17.88% || || 7.89% || 10.28% || || 10.25% || 47.84% || style="background:#61A5A5;"|52.16%
 * 26.76% || 26.94% || 17.88% || || 7.89% || 10.28% || || 10.25% || 47.84% || style="background:#61A5A5;"|52.16%

! 25 August-1 September 2019 ! 18-25 August 2019 ! 12-18 August 2019 ! 4-11 August 2019 ! 28 July-4 August 2019 ! style="background:#b0e9db;"|July 2019 election
 * 2 September 2019
 * colspan="12"| Change Australia is voluntarily deregistered
 * colspan="12"| Change Australia is voluntarily deregistered
 * 25.6% || 27.2% || 19.6% || 6.3% || || 3.9% || 8.9% || || 45.9% || style="background:#61A5A5;"|54.16%
 * 30 August 2019
 * colspan="12"| The Australian Progressives merge into the Australian Labor Party
 * colspan="12"| The Australian Progressives merge into the Australian Labor Party
 * 24.2% || 26.8% || 12.1% || 6.5% || 9.5% || 3.9% || || 8.2% || 44.8% || style="background:#61A5A5;"|55.2%
 * 25 August 2019
 * colspan="12"| MattMonti's SA-BEST is renamed to Change Australia: The Independent Group
 * 22 August 2019
 * colspan="12"| The Australian Whigs are voluntarily deregistered
 * 22 August 2019
 * colspan="12"| The Australian Whigs are voluntarily deregistered
 * 23.3% || 25.7% || 12.3% || 6.5% || 9.6% || 3.9% || 2.3% || 7.6% || 44.3% || style="background:#61A5A5;"|55.7%
 * 23.8% || 25.1% || 12.6% || 6.5% || 9.9% || 3.8% || 2.5% || 7.1% || 44.5% || style="background:#61A5A5;"|55.5%
 * 11 August 2019
 * colspan="12"| 3 Liberal MPs leave their party to form the National Party of Australia
 * colspan="12"| 3 Liberal MPs leave their party to form the National Party of Australia
 * 30.1% || 24.8% || 13.4% || 6.4% || 9.9% || 3.3% || 2.7% || || 46.5% || style="background:#61A5A5;"|53.5%
 * 4 August 2019
 * colspan="12"| The South Gippsland Network renames to the Australian Progressives
 * 4 August 2019
 * colspan="12"| The Agrarian Party of Australia and the Australian Greens merge to form the Australian Labor Party
 * 4 August 2019
 * colspan="12"| Public Transport Party Victoria and the Socialist Party of Australia are deregistered
 * 4 August 2019
 * colspan="12"| Public Transport Party Victoria and the Socialist Party of Australia are deregistered
 * colspan="12"| Public Transport Party Victoria and the Socialist Party of Australia are deregistered
 * style="background:#b0e9db;"|34.8%
 * style="background:#b0e9db;"|13.6%
 * style="background:#b0e9db;"|8.7%
 * style="background:#b0e9db;"|14.3%
 * style="background:#b0e9db;"|12.2%
 * style="background:#b0e9db;"|8.0%
 * style="background:#b0e9db;"|1.5%
 * style="background:#b0e9db;"|
 * style="background:#b0e9db;"|
 * style="background:#b0e9db;"|