LAHORE  - The election of the president would be held through secret ballot. Members of National Assembly, Senate and the four provincial legislatures would take part in the presidential election.
Under the Constitution, each member of the Senate, the National Assembly and Balochistan Assembly would have one electoral vote. 
Rest of the three legislatures-Punjab Assembly, Sindh Assembly and KPK Assembly, would have 65 electoral votes each equal to total strength of the legislature of the smallest federating unit-Balochistan.
The number of votes cast in a Provincial Assembly in favor of each candidate shall be multiplied by the total number of seats in the Provincial Assembly for the time being having the smallest number of seats and divided by the total number of seats in the Provincial Assembly in which the votes have been cast; and added to the number of votes obtained from the Senate and National Assembly.)  A fraction shall be rounded off to the nearest whole.
As per the formula for calculation of votes in the provincial assemblies, around 5.90 members of Punjab Assembly would make one electoral vote. In Sindh Assembly, votes of around 2.90 members would be equal to one electoral vote whereas in the KPK, votes of two members would be equal to one electoral vote.
In Punjab Assembly, a total of 357 members would cast their votes today. Given the party position, the PML-N has 55.35 electoral votes, PTI 4.73, PML-Q 1.63 and PPP has got 1.27. 
Based on respective strength of different political parties in the six legislatures and the counting formula of President’s electoral college, out of total around 698 electoral votes, the PML-N has 321 (also including 18 of PMAP, 11 of NP and 7 of PML-F), followed by the PPP (120), the PTI (65), MQM (38.7), JUI-F (29.73), ANP (15), PML-Q (10) and JI (8). The independents and other smaller parties including the BNP and the NPP also constitute President’s Electoral College with small number of votes not exceeding the single digit.
Since the MQM, the JUI-F and FATA members are most likely to vote for Mamnoon Hussain, the PML-N candidate, he is all set to secure close to 400 electoral votes.
The Chief Election Commissioner shall be the Returning Officer for the election and shall appoint Presiding Officers to preside at the meeting of the members of Parliament and at the meetings of the members of the Provincial Assemblies. In the Parliament House, Islamabad, Chief Justice Islamabad High would act as Presiding officer whereas the chief justices of four provincial courts would perform this responsibility in four provincial legislatures. The polling would start by 10 am and conclude at 3 pm. The results are expected to be announced the same day.
According to the procedure laid down in second schedule of the constitution under Article 41 (3), a ballot paper shall be issued to every member of Parliament, and of each Provincial Assembly, who presents himself for voting at the meeting of the members of the Parliament or, as the case may be, of the Provincial Assembly of which he is a member and he shall exercise his vote personally by marking the paper.  The poll shall be secret ballot by means of ballot papers containing the names of all the candidates in alphabetical order who have not withdrawn, and person voting shall vote by placing a mark against the name of the person for whom he wishes to vote.  Ballot papers shall be issued from a book of ballot-papers with counterfoils, each counterfoil being numbered; and when a ballot paper is issued to a person voting his name shall be entered on the counterfoil, and the ballot paper shall be authenticated by the initials of the Presiding Officer.  A ballot paper having been marked by the person voting shall be deposited by that person in a ballot box to be placed in front of the Presiding Officer. 
If a ballot paper is spoiled by a person voting he may return it to the Presiding Officer, who shall issue a second ballot paper, cancelling the first ballot paper and marking the cancellation on the appropriate counterfoil.  A ballot paper shall be invalid if there is upon it any name, word or mark, by which the person voting may be identified; or it does not contain the initials of the Presiding Officer; or it does not contain a mark; or a mark is placed against the names of two or more candidates; or there is any uncertainty as to the identity of the candidate against whose name the mark is placed. Presiding Officer shall, in the presence of such of the candidates or their authorized representatives as may desire to be present, open and empty the ballot boxes and examine the ballot papers therein, rejecting any which are invalid, count the number of votes recorded for each candidate on the valid ballot papers.