According to the constitution, what are the two formal duties of the vice president?

The two formal duties that a vice president should do and are given for him to do are the following;

- They are responsible for presiding over and to be able to certify with the vote court in which are official and are in the electoral college

- They are also responsible of casting a vote in terms of deadlock of a senate

to preside over the House and balance the campaign ticket.