Is it true a preamble is the conclusion to a declaration, constitution, or official document.

no, a preamble is the introduction to a declaration, constitution or official document

Explanation:

polling is a process and the outcome is not involved in the process itself.

the outcome, which is an unfavorable rating for a particular candidate is not affected by the mechanical process of polling.

it rather depends on the number of people voting in favor of the candidate.

this is an outcome of people's preferences.

to act quickly in times of danger to the united states

because you have to act quickly if you want to live/survive.