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Electoral district of Upper Hunter in the New South Wales Legislative Assembly | |||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Registered | 56,127 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Turnout | 86.74  3.80 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
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 The Electoral district of Upper Hunter in New South Wales | |||||||||||||||||||||||||||||||||||||||||||||||||||||
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The 2021 Upper Hunter by-election was held on 22 May 2021 to elect the next Member of Parliament for the district of Upper Hunter in the Legislative Assembly. The by-election was triggered following the resignation of incumbent Nationals MP Michael Johnsen on 31 March 2021.
At around 8:30 pm on the by-election night, ABC News psephologist Antony Green called the election for the Nationals candidate Dave Layzell. Although Layzell was considered the narrow favourite based on polling, he ultimately won by a margin of 5.8% in the two-candidate-preferred vote, larger than polling suggested.