Tunisia's presidential and parliamentary elections will go ahead as planned later this year despite delays in approving a new election law, authorities said on Wednesday. ** date has yet been set for the elections, the second ballot since the 2011 uprising that ousted autocrat Zine el-Abidine Ben Ali and the first since the adoption of a new constitution praised internationally as a model for transition to democracy. "Thesecond elections after the 2011 vote will be more difficult because the standards will be tougher," said Chafik Sarsar, head of the Independent Election Commission (ISIE). Sarsar ack**wledged hurdles to overcome, including the fact ISIE does **t yet have a headquarters and delays to the new electoral law meant to provide a framework for running the ballot.