McCain calling Obama a liar?

In a recent rally in Pennsylvania,  McCain explained that Obama does not stick to what he says which also indicates that he is a hypocrite.McCain believes that the reason he would make a better president is because he is a man of his word, and believes that Obama is trying to focus on the idea of change more than he is trying to focus on fixing the problems facing the United States. McCain also questioned who the real Obama is, according to CNN McCain asked "Who is the real Sen.Obama?" He tried to focus more on questioning and criticizing Obama than discussing the economic problem. Biden said of the multiple accusations set to attack Obama as a way to divert the public's attention away from what McCain is trying to avoid talking about.  During the vice presidential debate Sarah Palin also called Obama a hypocrite indirectly by saying that McCain does what he says he is going to do.