New Mexico Constitution Art. VIII, § 2. Real or personal property taxes

Taxes levied upon real or personal property for state revenue shall not exceed four mills annually on each dollar of the assessed valuation thereof except for the support of the educational, penal and charitable institutions of the state, payment of the state debt and interest thereon; and the total annual tax levy upon such property for all state purposes exclusive of necessary levies for the state debt shall not exceed ten mills; provided, however, that taxes levied upon real or personal tangible property for all purposes, except special levies on specific classes of property and except necessary levies for public debt, shall not exceed twenty mills annually on each dollar of the assessed valuation thereof, but laws may be passed authorizing additional taxes to be levied outside of such limitation when approved by at least a majority of the qualified electors of the taxing district who paid a property tax therein during the preceding year voting on such proposition.