| 1. | He joined the Australian Democrats and was elected to the casual vacancy.
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| 2. | The casual vacancy was filled by Pat Dodson on 28 April 2016.
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| 3. | The Labor Party nominated Colston to fill the casual vacancy in the Senate.
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| 4. | When released, " The Casual Vacancy " received mixed reviews.
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| 5. | The casual vacancy was filled by Jacinta Collins.
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| 6. | The casual vacancy was filled by Christabel Chamarette.
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| 7. | Since 1917, casual vacancies have usually been filled by a simple recount of votes.
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| 8. | Half the Senators retired as their terms expired, and there was one casual vacancy.
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| 9. | Casual vacancies are filled by countback.
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| 10. | It was the first casual vacancy to occur since the reform of the Legislative Council in 2006.
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