When do presidential candidates announce they are running?

The outcome of this case would have been the same if President Nixon had claimed national security needs rather than executive privilege? What state official performs a role similar to the vice president? What basic allowance for housing rate is for soldiers living in the barracks? What pass was chosen as a road from the Canterbury plains to the west coast? How do you dissolve a committee in a residence housing association and how many of the residence do we need to vote the committee out giving a vote of no confidence? What happens when a financial deal goes physical? Who was president in January 23 1933? Did Grover Cleveland wil the Nobel Peace Prize in 1906? How many people are there now compared to when Kennedy was inaugurated? How fast should a 110lb 5'7 freshman in high school be? Which US president first spoke of the coming of a new world order? Does every country have their own pledge of allegiance? How do you pronounce Iobates Lycia Chrysoar Celeris Ephyre Eurynome Polyidus Proetus Deliades Anteia and Solymi? How do you close your income accounts? What did Jefferson say about the monarchy in his respective document? What is the fiver crossed by geogrge Washington and his troops in the winter of 1776? How long did the plessey vs Ferguson decision last? What allows the supreme court to declare a law passed by congress or the president as unconstitutional? What was Abe so smart? Who is the actress in the Fidelity investment commecials where she follows the green line on the floor of her kitchen?