Indiana constitution
Article 4: legislative
Section 30

No Senator or Representative shall, during the term for which he may have been elected, be eligible to any office, the election to which is vested in the General Assembly; nor shall he be appointed to any civil office of profit, which shall have been created, or the emoluments of which shall have been increased, during such term; but this latter provision shall not be construed to apply to any office elective by the People.