WOTC - Competition in electricity supply

I asked this question in the Wisdom of the Crowd:

Is it good to have competition in the electricity supply market?

Here are the responses: (30 Votes)

60 % - The electricity should be provided by a public agency with full transparency and accountability.
20 % - It will help to bring down prices.
10 % - The competition will add marketing cost and other administrative expenses and will eventually increase cost.
10 % - The cost of electricity should be regulated, based on the actual cost of supply.

See the pie chart at: 
http://www.wisdomofthecrowd.sg/chart.aspx?ID=923