The campaign chief and deputy campaign manager for Republican presidential contender Michele Bachmann are leaving in a campaign shake-up.
Bachmann campaign manager Ed Rollins told CNN that at 68 he just does not have the stamina for 12- and 14-hour days every day of the week.
He said he had planned a transition after putting into place a campaign team and getting past the Iowa Straw Poll. He plans to continue as a senior adviser.
Mr Rollins said his deputy and long-time colleague, David Polyansky, decided that it was a good time for him to leave the campaign as well.
Mr Rollins said Texas Governor Rick Perry changed the dynamic when he joined the field. He says the race is between Mr Perry and former Massachusetts Governor Mitt Romney, with Ms Bachmann as number three.