What is the most important item a candidate needs to wage a successful campaign? Why do candidates need this item?

It takes 1,000s of dollars to run a campaign so I would say the most important item is money.

well, there are a lot of places we get information about earth from. like science classes, websites, books, newspapers, etc.

changes in factors like average income and preferences can cause an entire demand curve to shift right or left. this causes a higher or lower quantity to be demanded at a given price. demand curves relate the prices and quantities demanded assuming no other factors change. it is important for consumers to know this information, because it is crucial for them to know what they can afford and can't afford. i hope this .