The Election Commission has again asked political parties to observe self-imposed restraint while campaigning. In a letter sent to all recognised parties, the poll panel said, inflammatory statements are being made by some leaders with underlying object of mixing religion with election campaign. It said, past advisories are not having the desired result. <br/><br/>The poll watchdog said, some of the statements were made from places where the model code is not in force. Urging parties to reverse the trend, the Commission said, such speeches indicate an unhealthy trend which is a cause of concern. In a landmark ruling, the Supreme Court had recently said that no politician can seek vote in the name of caste, creed or religion.