Okla. Stat. tit. 74E § 2.39
No contributions accepted by a political party committee, a political action committee or a candidate committee may be converted by any person to personal use. "Personal use" includes any use of funds to fulfill a commitment, obligation or expense of any person that would exist irrespective of a political party's activities, a political action committee's activities or a candidate's campaign or responsibilities as holder of a state elective office, as the case may be. "Personal use" by a candidate includes, but is not limited to, food purchased for daily consumption in the candidate's home or supplies needed to maintain the household; clothing (excluding campaign clothing of low monetary value such as T-shirts or caps); mortgage, rent or utility payments for the candidate's personal residence, even if part of the residence is being used for the campaign; use of a motor vehicle for noncampaign purposes or non-officeholder expenses; interest on a loan made by the candidate or the candidate's spouse to the campaign; costs of a vacation or other trip not related to the campaign or officeholder expenses; admission to athletic events, concerts, theater or other forms of entertainment (except for events that are part of the campaign); dues in country clubs, health clubs, recreational facilities or other nonpolitical organizations and earnings from investment of contributions other than as permitted by these Rules.
Okla. Stat. tit. 74E, § 2.39