[2] Blay was appointed to the position of board chairman for the Ghana National Petroleum Corporation (GNPC).

He lost his seat in the general elections held on 7 December 2008 to Armah Kofi Buah of the NDC.

After joining the NPP, he stood for and got elected to the post of Vice Chairman of the party in April 2014.

In the prelude to the Chairmanship race, lots of controversies were generated when Blay promised and eventually bought 275 buses for the 275 constituencies of the party for a purported cost of 11 million dollars.

In Parliament in 1996, the minority headed by the NPP, chose him as the Second Deputy Speaker, while NDC's Ken Dzirasah was the First.

In 2004, the NDC put up Ala Adjetey, the previous speaker for the same position, against the majority NPP's Ebenezer Sekyi-Hughs.