Rasmussen Presidential Survey shows Mike Huckabee tied with President Obama 43-43.
This survey question was conducted during the same time period that President Obama gave his Tuscon shooting speech in Arizona.
Mike Huckabee 43% (41%)
Barack Obama 43% (45%)
Note that Mike Huckabee's percentage has gone up while Barack Obama's has gone down since the last survey conducted in November 2009.