What type of law provides for election-related criminal offences?

Act number 2 of 2063 enacted by the Legislative-

Parliament

The Act Made to Amend and Consolidate PrevailingLaws

Relating to Election Offences and Punishment

Source: http://www.ncf.org.np/upload/files/203_en_Election%28offence&Punishent%29ACT_2063_ENG.pdf