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"States Parties undertake to ensure and promote the full realization of all human rights and fundamental freedoms for all persons with disabilities without discrimination of any kind on the basis of disability."

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UN: Convention on the Rights of Persons with Disabilities, art. 4

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Convention on the Rights of Persons with Disabilities

Summaries

Distinctions made on the basis of disabilities are to be considered discrimination.
With respect to candidates for office, there should be no restrictions on candidacy based on any form of disability.