Mo. Rev. Stat. § 130.037
Any candidate may file a supplemental report containing information required pursuant to section 130.041 for the purposes of this section. Candidates whose supplemental report filed within thirty days of August 28, 1997, or whose report filed pursuant to subdivision (2) of subsection 1 of section 130.046 reflects outstanding obligations in excess of moneys on hand, may convert their campaign committee to a debt service committee as provided in this section. If a debt service committee is formed, the committee may accept contributions from any person. A person who contributes to a debt service committee of a candidate may also contribute to the candidate's campaign committee for a succeeding election. The treasurer and the candidate shall terminate the debt service committee pursuant to section 130.021 when the contributions received exceed the amount of the debt, and within thirty days the committee shall file disclosure reports pursuant to section 130.041 and shall return any excess moneys received to the contributor or contributors, if known, otherwise such moneys shall escheat to the state. No debt service committee shall be in existence more than eighteen months.
§ 130.037, RSMo