Is laden alive?

it is said that bin laden is dead and there is 70% chance that he is dead, we know this because what benefit would it give Obama if he is dead; but if he is lying that bin laden is dead, he probably won't be elcted to be the president of America again because they know that he is a big liar. on the other hand he might be alive because barrack Obama has no proof at all to show us if bin laden is really dead or alive. we will know if Obama was lying because every now and then bin laden sends a massage to America and if there are no messages received, then i guess he really is dead