Final answer:
The Vice President, who is also the President of the Senate, presides over a joint session of Congress to count and announce the electoral vote results for the U.S. Presidential election.
Step-by-step explanation:
In a joint session of Congress, the official who presides over the count and announces the results of the electoral vote is the Vice President, who serves as the President of the Senate. According to the procedures laid out in the Constitution and the 12th Amendment, after the electors in each state meet and vote for President and Vice-President, they send their votes to the President of the Senate. Then, in the presence of both the Senate and the House of Representatives, the President of the Senate opens all the certificates and the votes are counted.
The Vice President, as the President of the Senate, has the role of presiding over the counting of the electoral votes during a special joint session of Congress, which normally takes place in January following a presidential election. The person who receives the majority of the electoral votes for President is declared the winner and becomes the President-elect.