Thailand: Watchdog says amnesty pledges, vote-no campaigns acceptable, Bangkok Post (2011)
This article reports on the ruling of the Election Commission with regards to the vote-no campaigns by the PAD. The EC has has ruled it not illegal. However, they continue to encourage voters to exercise their rights and accept the results.
The link address is: http://www.bangkokpost.com/news/politics/240600/watchdog-says-amnesty-pledges-vote-no-campaigns-acceptable