As the U.S. House of Representatives prepares to vote on whether to hold Attorney General Eric Holder in contempt of Congress, American voters are slightly more inclined to think the White House is covering up something about "Fast and Furious" than that the Republican investigation into the failed gun-tracking operation is a witch hunt.  

A Fox News poll released Wednesday shows that 38 percent of voters think the fight over "Fast and Furious" is better described as a "cover up by the White House," while 32 percent say it is a "witch hunt by Congressional Republicans."  Twelve percent say it's both and 18 percent don't have an opinion either way.  

The contempt of Congress vote is scheduled for Thursday.

Congress is investigating the botched government operation that allowed thousands of guns to be smuggled to criminals in Mexico.  One of the weapons is believed to have been used to kill a U.S.