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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2508.08914 |
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| _version_ | 1866908486515818496 |
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| author | Kovács, Tímea Petróczy, Dóra Gréta Pásztor, Gábor |
| author_facet | Kovács, Tímea Petróczy, Dóra Gréta Pásztor, Gábor |
| contents | As of 2022, the European Union has taken several steps regarding enlargement. We focus on the accession of countries with which the Union is actively negotiating membership. This is examined under two enlargement scenarios: first, the enlargement along the lines of the Western Balkan countries, and second, the accession of a trio (Ukraine, Moldova, and Georgia) to the already enlarged Union. We determine the a priori power of the member states based on the Banzhaf and Shapley--Shubik indices. Various coalitions are also assumed to assess the power and influence of member states, considering both pre- and post-enlargement scenarios. We found a rare case when the two indices give different rankings. In the case of the Western Balkan countries' accession, the smaller population member states gain power, presenting an example of the new member paradox. While in a Union of 36 members, every member state loses some of their current power. However, some coalitions are better off with the EU36 enlargement than a EU33 one. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_08914 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The impact of the European Union's enlargement with the Western Balkans and the Association Trio on the power of member states in the Council Kovács, Tímea Petróczy, Dóra Gréta Pásztor, Gábor General Economics Economics 91A80, 91B12 As of 2022, the European Union has taken several steps regarding enlargement. We focus on the accession of countries with which the Union is actively negotiating membership. This is examined under two enlargement scenarios: first, the enlargement along the lines of the Western Balkan countries, and second, the accession of a trio (Ukraine, Moldova, and Georgia) to the already enlarged Union. We determine the a priori power of the member states based on the Banzhaf and Shapley--Shubik indices. Various coalitions are also assumed to assess the power and influence of member states, considering both pre- and post-enlargement scenarios. We found a rare case when the two indices give different rankings. In the case of the Western Balkan countries' accession, the smaller population member states gain power, presenting an example of the new member paradox. While in a Union of 36 members, every member state loses some of their current power. However, some coalitions are better off with the EU36 enlargement than a EU33 one. |
| title | The impact of the European Union's enlargement with the Western Balkans and the Association Trio on the power of member states in the Council |
| topic | General Economics Economics 91A80, 91B12 |
| url | https://arxiv.org/abs/2508.08914 |