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Member of the Senedd (MS) is the title given to elected representatives in the Senedd, the Welsh Parliament. Leanne Wood served as an MS for the Rhondda constituency from 2003 to 2021. During her tenure, she held various roles, including Leader of Plaid Cymru, the Welsh nationalist party, from 2012 to 2018. As an MS, Wood played a significant role in shaping Welsh legislation and policies.