(a) The board may order an election to increase the district's maximum ad valorem tax rate. The board shall order the election if the board receives a petition requesting an election that is signed by at least 50 registered voters in the district.(b) The ballot for the election shall be printed to permit voting for or against the proposition: 'The imposition of annual taxes by the district for hospital purposes at a rate not to exceed _____ (insert amount) cents on the $100 valuation of all taxable property in the district.'(c) If the board finds that the election results favor the proposition, the board may impose taxes as authorized by the proposition. If the board finds that the election results do not favor the proposition, another election on the question of raising the district's maximum tax rate may not be held before the first anniversary of the date of the most recent election at which voters disapproved the proposition.(d) Section 41.001(a), Election Code, does not apply to an election ordered under this section. Added by Acts 2007, 80th Leg., R.S., Ch. 920 (H.B. 3166), Sec. 1.02, eff. April 1, 2009.