Notwithstanding the provisions of section 3 of article 15 of the constitution of the state of Kansas, the legislature may permit, regulate, license and tax, at a rate not less than 3% nor more than 6% of all money wagered, the operation or conduct, by bona fide nonprofit organizations, of horse and dog racing and parimutuel wagering thereon in any county in which: (a) A majority of the qualified electors of the county voting thereon approve this proposed amendment; or (b) the qualified electors of the county approve a proposition, by a majority vote of those voting thereon at an election held within the county, to permit such racing and wagering within the boundaries of the county. No off-track betting shall be permitted in connection with horse and dog racing permitted pursuant to this section.