In 2008, Obama repeatedly vowed to close Gitmo if he became Commander In Chief and that Gitmo shamed America to the entire world. When elected president, since Gitmo is part of a military base and operation, he could have closed it merely by signing an Executive Order without any need for approval by Congress.
He did not close it. Amazingly, closing Gitmo was again part of his campaign in the 2012 election.
Personally, I can think of no more clear example (of so many) in which Obama is an outright calculated - if not pathological - liar.
However, the poll question is simple:
Did Obama lie during the 2008 election when he vowed to close Gitmo if he became president?