I asked this question in the Wisdom of the Crowd:

Should the govt exercise price or supply control over essential commodities?

Here are the responses: (51 Votes)

55 % - The controls should be extended to keep inflation low
27 % - The controlx should be for a short period to moderate the price increases
18 % - There should be no controls to prevent a black market.

See the pie chart at:
http://www.tklcloud.com/Crowd2/chart.aspx?ID=2625

CLick here to vote on the current issues:
https://tklcloud.com/Crowd2/active_issue.aspx