Yes, In my opinion all candidates be it MP,MLA down to panchayat election candidates, Corporators should be enrolled with UID AADHAAR card .
Even people who are engaged in parties as Party Workers should have AADHAR Card.
All Govt employees ( State & Central Govt.) including Defence personnel should be enrolled with UID Aadhaar.
Practically all INDIAN CITIZENS should have UID Aadhar enrollement.