M. Tullius Cicero De Lege Agraria 24

[24] Therefore, an exception is made by this law, mentioning not youth, nor any legal impediment, nor any command or magistracy, which might be encumbered with obstacles arising either from the business with which it was already loaded, or from the laws. There is not even an exception made in the case of any convicted person, to prevent his being made a decemvir. Cnaeus Pompeius is excepted and disabled from being elected a colleague of Publius Rullus (for I say nothing of the rest). For he has worded the law so that only those who are present can stand for the office; a clause which was never yet found in any other law, not even in the laws concerning those magistrates who are periodically elected. But this clause was inserted, in order that if the law passed you might not be able to give him a colleague who would be a guardian over him, and a check upon his covetousness. 10
  Here, since I see that you are moved by the dignity of the man, and by the insult put upon him by this law, I will return to the assertion that I made at the beginning, that a kingly power is being erected, and your liberties entirely taken away by this law.