On election day she took the seat vacated by Helen Mary Jones, who succeeded in winning the Llanelli constituency.

[3] In 2011 she was appointed as an Education commissioner in Blaenau Gwent County Council by the Welsh Government[3] In 2012 Deryn Public Affairs Agency was set up.

Nerys Evans was appointed as a joint director of the Agency in addition to Cathy Owens a former Welsh Labour Government Special adviser.

[3] In December 2022 Evans was chosen by Adam Price to write a report on the allegations of bullying and sexual harassment within Plaid Cymru.

Prosiect Pawb report was published in May 2023 concluding that there was ''a culture of harassment, bullying and misogyny" within the party, this led to Adam Price stepping down as leader on 10 May.