Though you were on the right track, it's actually Support for THE president.
No, it is not grammatically correct to say 'support to.' The correct expression is 'support for,' as in "They provided support for the project."
Yes, it is. For example, "I am thankful for the support of my friends and family."
Both; for is a person & of would be for something besides.
Yes, it is correct, but to be more correct, it needs a hyphen: "The Vietnam War was over, and then-president Richard Nixon found himself embroiled in the Watergate scandal."
Looks quite good to me, but I would put 'The' in front of 'president'.
It is correct to say, "I am rooting for you."root 3 (rt, rt)intr.v. root·ed, root·ing, roots1. To give audible encouragement or applause to a contestant or team; cheer. See Synonyms at applaud.2. To lend support to someone or something.
"Support in applying" is more correct than "support with applying."
There are many equally correct ways of describing how the President of the US is elected. One would be to say that the people in each state vote for Electors who in turn vote for the team of President and Vice President. This is an indirect election process.
It is more appropriate to say that the Vice-President of the United States has as one of his constitutional responsibilities to serve as President of the US Senate.
It is usually "support for." For example, "I offer my support for the project."
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In Ireland the correct formal address is "Your excellency" but in practice most people would say Mr./Madam President or President Higgins/McAleese etc