Chinese authorities have ruled out open nominations for elections to choose Hong Kong’s leader.
Authorities said two to three candidates will be nominated by a "broadly representative" committee.
The decision is expected to limit elections to a selection of pro-Beijing candidates and is likely to trigger protests from pro-democracy activists.
Some of them have threatened mass disobedience if elections in the former British colony are not opened up.
The pro-democracy Occupy Central movement is expected to hold a rally later on Sunday to discuss its reaction to the decision.
The election for Hong Kong’s chief executive is due in 2017 and will be the first time the holder of the post is directly chosen by voters.
On Saturday China warned foreign countries against "meddling" in Hong Kong’s politics, with an article in a state-run newspaper accusing some in Hong Kong of "colluding" with unnamed "outside forces".
A foreign ministry spokesman was quoted as saying this would "absolutely not be permitted".