The question is the size and number of the donations. A private citizen can donate very little compared to someone with the resources of oil tycoons (I'm using

The question is the size and number of the donations. A private citizen can donate very little compared to someone with the resources of oil tycoons (I'm using the Koch brothers, since they're the topic of the parent article). If total political donations were limited, or if an individual was only allowed to donate a limited amount to each candidate, the situation would be very different. But when a candidate has a handful of people donating two-thirds of their campaign funds, those voices will be heard above the rest.