The Republican sheriff raised $625,000 from June 1 through Aug. 8 and had $4.1 million in his re-election campaign fund at the end of the period. Democrat Paul Penzone raised $89,000 during that time and finished with $72,000 left over.
Independent Mike Stauffer’s campaign says it had raised $1,640 and had $852 remaining at the end of the period.
Democrat John Rowan had $3,645 in contributions and had $1,843 at the period’s end.
Arpaio is seeking a sixth term as sheriff.
Arpaio has received numerous donations from people living outside Arizona.