Bahrain's king enacted a law banning members of banned political parties, felons and convicts who later received royal pardons from standing as candidates for elections.
King Hamad bin Isa Al Khalifa's decision Monday effectively blocks Bahrain's opposition from taking part in parliamentary elections likely to take place in November.
The decision was announced by the state-run Bahrain News Agency.
Opposition political parties have been disbanded by court order in Bahrain, part of a wide-ranging crackdown on dissent in the island kingdom off the coast of Saudi Arabia.
Bahrain's parliament, stacked with government loyalists, earlier passed the law enacted by the king.
Activists have been imprisoned and forced into exile as part of the crackdown.
Bahrain is home to the US Navy's 5th Fleet and a British naval base.
Source: News Agencies, Edited by website team