I blame racism.

(Politico) — Americans are growing increasingly more frustrated with President Barack Obama’s handling of the economy and only 3 in 10 say they are certain they will vote to re-elect him in 2012, a new poll finds.

Just 23 percent of those surveyed for a Bloomberg News poll released Wednesday say they are hopeful about the economy because they see signs of improvement, while 25 percent say they are fearful things are getting worse and 51 percent are cautious because nothing seems to be happening.

Those signs of economic pessimism aren’t helping Obama’s reelection bid.

Sixty-one percent of Americans say they believe the president will have had a chance to make the economy “substantially better” by the end of 2012, while 37 percent say he won’t have. Forty-four percent of Americans say they are worse off than they were when Obama took office, while 34 percent say they are better off and 21 percent say they are doing about the same.

While 30 percent of Americans say they will vote for Obama, 36 percent say they definitely won’t vote for him. Among likely independent voters surveyed, just 23 percent say they are certain they will vote for Obama while 36 percent say they are sure they will seek out another candidate.