Barnaby Joyce’s December 2025 defection from the Nationals to One Nation, followed by the party’s May 2026 Farrer by-election win and multiple state-level gains, has reinforced trader expectations of further sitting-MP switches before year-end. Coalition fractures, including leadership tensions and policy disagreements over renewables and immigration, continue to prompt speculation about additional departures from Liberal and National ranks. One Nation’s sustained polling surge into the mid-20s has drawn interest from disaffected conservatives, with reports of approaches to figures such as former Labor MP Ben Dawkins in Western Australia. These dynamics, alongside the absence of major stabilizing events in the major parties, underpin the 60.5% implied probability for at least one more sitting MP joining in 2026.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedWill another sitting Australian MP join One Nation in 2026?
An announcement that the individual will transition from independent status or another political party to One Nation will qualify only if the individual is a sitting MP in the Australian House of Representatives at the time of the announcement.
This market will resolve based on a qualifying announcement made within the specified timeframe. Once such an announcement is made, whether or when the individual subsequently joins One Nation will not affect the market’s resolution.
The primary resolution source for this market will be official information from the relevant MP or their official representatives; however, a consensus of credible reporting may also be used.
Market Opened: Jun 23, 2026, 9:38 PM ET
Resolver
0x65070BE91...An announcement that the individual will transition from independent status or another political party to One Nation will qualify only if the individual is a sitting MP in the Australian House of Representatives at the time of the announcement.
This market will resolve based on a qualifying announcement made within the specified timeframe. Once such an announcement is made, whether or when the individual subsequently joins One Nation will not affect the market’s resolution.
The primary resolution source for this market will be official information from the relevant MP or their official representatives; however, a consensus of credible reporting may also be used.
Resolver
0x65070BE91...Barnaby Joyce’s December 2025 defection from the Nationals to One Nation, followed by the party’s May 2026 Farrer by-election win and multiple state-level gains, has reinforced trader expectations of further sitting-MP switches before year-end. Coalition fractures, including leadership tensions and policy disagreements over renewables and immigration, continue to prompt speculation about additional departures from Liberal and National ranks. One Nation’s sustained polling surge into the mid-20s has drawn interest from disaffected conservatives, with reports of approaches to figures such as former Labor MP Ben Dawkins in Western Australia. These dynamics, alongside the absence of major stabilizing events in the major parties, underpin the 60.5% implied probability for at least one more sitting MP joining in 2026.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated



Beware of external links.
Beware of external links.
Frequently Asked Questions