I honestly don't mind if my MP has PREVIOUS criminal convictions - they have been through the justice system and should have done their time/paid their fine. It would be a testiment to our penal system if they could then come out and give a positive contribution to the community.
I think that our MP's should reflect our community, some of us have made mistakes and had a brush with the law, some of us have been bad buggers in our youth and have now matured a bit. It's good to see things from a wide range of viewpoints when making laws.
HOWEVER, i do believe that if you want to run for a public position - then you must agree to let everyone know all about your background, convictions, education, your financial interests (directorships, chairmanships, large shareholdings - current or past)
Once you are in office, you must not only obey the laws of the land, but you must set an example, it's not enough to follow the letter of the law, but the spirit of the law.
Yup, might be a bit hypocritical, but i expect MP's to behave squeaky clean once they are in there. I will admit to bending some rules and laws myself from time to time, but i'm not the one representing hundreds of thousands of people in the community, i'm not shaping laws and i'm not having an input into the decisions that shape the future of the country.
They are well paid to stop them being sidelined and wandering from the right path.