Kuwait's cabinet said on Thursday that it has approved a decree setting a legislative poll for July 25 after the constitutional court scrapped parliament and upheld the controversial electoral law.

"The cabinet at an extraordinary session approved a draft decree setting July 25 as the date for parliamentary elections," State Minister for Cabinet Affairs Sheikh Mohammad Abdullah al-Sabah told the official KUNA news agency.

The decree will be issued later by Emir Sheikh Sabah al-Ahmad al-Sabah.

The decision came after the constitutional court on Sunday scrapped the 50-seat parliament elected on December 1 amid a total boycott by the opposition in protest against an amendment to the electoral law that was confirmed by the court, whose rulings are final.

The ruling paved the way for Kuwait's second parliamentary election in eight months, and third since February 2012.

The oil-rich Gulf state has been rocked by a series of political crises since early 2006 between MPs and the government.