Question

at present which rules of code of conduct during election are violated by the candidates

Answer 1

Election Commission of India's Model Code of Conduct is guidelines issued by the Election Commission of India for conduct of political parties and candidates during elections mainly with respect to speeches, polling day, polling booths, processions and general conduct.  

Set of norms has evolved with the consensus of political parties who have consented to abide by principles embodied in the said code in its letter and spirit.

Answer 2

A lot of rules are violated by the candidates in elected.

Some are:

criticizing the parties in public,

there are feelings of caste discriminate always attached,

there are materialistic things and also money involved before the elections,

there is disturbance of home-life often experienced during election campaigns, and

there are obstructions often experienced by common people.