Members of the state's audit committee are scheduled to vote Thursday whether to move forward with an investigation, which could take several months.
The Republican elections chief has been under fire for attending the Republican National Convention in Florida and a Republican election law training event. Gessler was reimbursed $1,570 in state funds to attend the event and Democrats and left-leaning groups have questioned whether that was appropriate.
Gessler has said he welcomes a full review of his expenses.
(Copyright 2012 by The Associated Press. All Rights Reserved.)