Constitution of the State of Illinois, 1818, Page 7

state, attorney general, attorney for the state, register, clerk of any court of record, sheriff or collector, member of either house of congress, or person holding any lucrative office under the United States or this state, (provided that appointments in the militia, postmasters or justices of the peace, shall not be considered lucrative offices) shall have a seat in the general assembly: nor shall any person, holding an office of honour or profit under the government of the United States, hold any office of honour or profit under the authority of this state.

Every person who shall be chosen or appointed to any office of trust or profit, shall, before entering upon the duties thereof, take an oath to support the constitution of the United States and of this state, and also an oath of office.

In all elections, all white male inhabitants above the age of twentyone years, having resided in the state six months next preceding the election, shall enjoy the right of an elector; but no person shall be entitled to vote except in the county or district in which he shall actually reside at the time of the election.

All votes shall be given viva voce until altered by the general assembly.

Electors shall in all cases except treason, felony or breach of the peace, be privileged from arrest during their attendance on elections and in going to and returning from the same.

The general assembly shall have full power to exclude from the privilege of electing or being elected any person convicted of bribery, perjury or any other infamous crime.