[1] He represented the electoral region of South Wales East, as a member of Plaid Cymru.

[7] He first became interested in politics with the 1995 Islwyn by-election, and became an active Plaid Cymru campaigner at the 1999 Welsh assembly election.

[8] Lewis was a town councillor in Blackwood and was the Plaid candidate for the 2006 Blaenau Gwent by-election to the House of Commons, coming third with 6.5% of the vote.

[9] Just one year after having taken his seat in the National Assembly, Lewis was diagnosed with bowel cancer in December 2017.

[13] His funeral was scheduled for 25 January at St Luke's Church, Abercarn, followed by burial at the local cemetery.