It is a unicameral parliamentary body consisting of thirty councillors elected to a five-year term.

The current Executive Board of Podlaskie is held by the coalition government of Civic Coalition and Third Way and supported by two PiS members with Łukasz Prokorym, KO presiding as marshal.

The Regional Assembly meets in the Marshal's Office in Białystok.

Members of the Assembly are elected from five districts, serve five-year terms.

The districts do not have formal names, instead each constituency has a number and territorial description.