What are you talking about?
When did Obama express his support for that? About when?
His numbers have been extremely low for a long time. This mosque thing has no effect on his popularity. Obama has been unpopular and will stay unpopular until after November at some time, if his popularity ever recovers at all. Depends on the results of the elections and what Republicans do if they win.
You're kidding, right?
Obama Strongly Endorses Islam Center Near 9/11 Site
Obama/Paul 2012