He was elected to the National Assembly of Armenia three times as an independent and most recently in 2021 as a candidate for the Civil Contract Party.

[6] In course of his parliamentary activity Sukiasyan participated in the discussion and development of many economic laws and proposed around 600 bills.

He proposed a number of new laws aimed at the development of entrepreneurship, free economic competitive relationships, and simplification of the tax system in the country.

[7] In 2005 he resigned from the post of SIL Group president, according to the amendments of Armenia's new constitution, which forbade entrepreneurship on behalf of members of parliament.

After Ter-Petrosyan accused the ruling government of falsifying the elections, mass protests broke out in Armenia, which were suppressed by the police and military following the declaration of a state of emergency.