DES MOINES, Iowa — A historically close finish in the Iowa caucuses ended the campaign of Minnesota Rep. Michele Bachmann on Wednesday and raised questions about how long Texas Gov. Rick Perry, who finished fifth in the six-way race, can continue to hang on.

Bachmann bowed out of the race early Wednesday after finishing a distant sixth in the caucuses with 5 percent, or 6,073 votes, according to final tallies reported Wednesday.