A simplified explanation of the necessity for an electoral system for people who pretend not to understand it

Example: Pretend both Grandfather's of the same family had 5 kids,all with their own families. Now, those 5 kids families have randomly 5,4,3,2 and 1 children amongst them.Now pretend that only one of the Grandfathers get a bunch of money every year if they can get the most votes from the families, it doesn't matter which. The grandfathers can promise anything they want to them,as long as they get enough votes to receive the annual money. How often do you think either Grandparents would bother trying to appeal to the families with 1,2 or 3 kids? Now, if the family's with 1,2 or 3 kids each had a VALUE of votes equal to the larger families, they would most certainly get the same amount of attention that the bigger families get, because despite being smaller,they need help from Grandpa too.
This is why we have an electoral system, because farmers,ranchers,loggers and the rest of middle America don't want to be and shouldn't be ignored by Grandpa,just because they have small familes.