Consider the following statements about the Deputy Speaker of the Lok Sabha:

1. The date of the Deputy Speaker's election is fixed by the Speaker, as per the Rules of Procedure and Conduct of Business.

2. The Constitution mandates that the Deputy Speaker must belong to a political party different from that of the Speaker.

3. When presiding over the House, the Deputy Speaker enjoys the same powers as the Speaker, and no appeal lies against the Deputy Speaker's rulings to any other authority.

4. There is a fixed constitutional convention specifying which member must move and which must second the motion for the Deputy Speaker's election.

How many of the statements given above are correct?