Though you were on the right track, it's actually Support for THE president.
The phrase "support to" is not grammatically correct in standard English usage. The correct construction is typically "support for" when referring to providing assistance or backing to someone or something. It is important to use the appropriate preposition to convey the intended meaning accurately.
Both; for is a person & of would be for something besides.
Yes, it is. For example, "I am thankful for the support of my friends and family."
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'.
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.
"Support in applying" is more correct than "support with applying."
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.
President is correct.President is correct.President is correct.President is correct.President is correct.President is correct.President is correct.President is correct.President is correct.President is correct.President is correct.
In Ireland the correct formal address is "Your excellency" but in practice most people would say Mr./Madam President or President Higgins/McAleese etc
Both are in common usage. The US Constitution uses the hyphen as well as capitalization: the Vice-President . Purists might say the hyphen is needed to avoid confusion with a possible president of vice.
It depends on how the sentence is structured. Both can be correct, though in speeches usually in support of is correct.