This is a more complicated question than you think. First of all you lumped together education and success pennstates reaction was appropriate.
In the teenage years most Americans hold, how do we say, idealistic views. They believe hard work gets you what you want, Welfare is stupid, Criminals are criminal's innocents are innocents, and all criminals should be punished hard. Statistically before college conservatives are the great majority.
As time goes on this percentage drops. People begin to fail college, People get sick, People get arrested, People get drafted, People get on welfare, Or some just finally meet people who are fall into these categories; Boom Bamb Bang Idealism gone! It's easy to want to help out the misfortunate if you are or know someone those misfortunate. In college liberals outnumber conservatives.
The exception is of course the successful. Again the motivations are pretty self serving. For most it's unintentional they figure if they didn't need welfare, Medicare, ect then who does? It is natural that conservative politics are linked to the successful they are the ones that conservative programs help out.