Lewisville's longtime mayor may have to choose between his day job and his elective office if one legislator has his way. State Sen. Pat Fallon, R-Prosper, filed a bill on Feb. 26 to limit certain local officials from serving as the chief appraiser of an appraisal district or as assessor for a taxing unit that operates an appraisal district. Fallon's office did not comment on what spurred him to file the bill. The bill, if passed, would mean Lewisville Mayor Rudy Durham would not be able to serve as the mayor and keep his job as the chief appraiser at Denton Central Appraisal District. "It is interesting that an elected official would try and prohibit another elected official from doing what any other resident can do," Durham said. Durham has been serving on the Lewisville City Council in some capacity since 1994 and has been working at the appraisal district since 1986. The bill would not pertain to the district's board of directors, which has several elected officials serving on it. The appraisal district board president is Charles Stafford, a Denton ISD trustee; board member David Terre is a council member in The Colony and board member Mike Hassett is married to a member of the Lewisville ISD school board. The bill only applies to counties with a population of more than 20,000. The 2017 Census Bureau estimate for Denton County's population is 836,210. If passed, the law would take effect Sept. 1. All of those affected would be required to resign or be removed from that elective position no later than Dec. 31.