Explanation:

 There is a special provision made for "Vote on Account" by which Government obtains the Vote of Parliament for a sum sufficient to incur expenditure on various items for a part of the year.
Normally, the Vote on Account is taken for two months only. But during election year or when it is anticipated that the main Demands and Appropriation Bill will take longer time than two months, the Vote on Account may be for a period exceeding two months.