WOTC - Separation of powers

I asked this question in the Wisdom of the Crowd - Which is most important for "separation of powers"

Here are the responses:

27% - independence of the Election Commission, CPIB and Public Prosecutor
27% - Transparency and accountability
24% - Limited tenure for the prime minister and ministers
24% - Parliament, Court and Government to play different roles

See the breakdown of the votes in
http://www.wisdomofthecrowd.sg/chart.aspx?ID=694