WHY TO CONCENTRATE ON THE RIGHT PUBLICS ONLY?

What do you prefer: to draw the crowds or to get the votes? Jim Horton has noticed that Barack Obama is drawing the crowds but Hillary Clinton is getting the votes. Why?
Not all the population is likely to vote. The essential voters are only those who are going to vote, and they are a minority of the population.
So you don't need to reach all the voters, it is certainly not anyone in your state. There are only certain groups of public you must reach.

PR tip is to focus on targeting the right groups of public at the right time.