GE proposed some good question to think about... I don´t live in USA and i´m not fully aware of it´s Socio-political moment and history but i do know some things that can help me to came up with some thoughts...
I live in Brazil that you can say it´s a very corrupt country. All the time we face some political escandal involving some politician. people around here love to keep blaming them (with reason of course) that they are this or that, but what few realize is that corruption is spread among the citizens. What espect from your politicians if they came from a similar social enviroment than most of population. Obviously there are plenty of variations depending on which way you was raised, the facts you experienced, etc and i should agree that some opportunists actively search for a "place at the sun" (to not mention that some get benefits from being relative of a politician and just "low with the waves"). Im not saying that "everyone is corrupt and that´s it and we can´t do anything about with" not at all! But we should try to comprehend some facts at the light of an enviroment that aren´t there only by chance but because of a particular evolution. If people from, say, Island are know to be "less corrupt country" (because of cultural issues / strong selective pressure against) you can expect this will reflect in their politicians.
For the correlation of political experience with a good govern i like to say some things: Seems obvious that we have some relation here (i would like to remind you that political experience isnt only had a "political job" e.g. being a politician, governator, senator, etc.), a person that lived most of his/her years outside of close contact with this world is less likely to know how many thing operate and what are the ways to deal with them. But that´s not all.
Many of the most corrupt politicians around here are the most experienced ones. When the current Brazil president won the elections many people were astonished by the fact that he was a humble worker that grow politically on the sindical movements (maybe because his left tendencies). But in fact, besides many negative aspects i could name, this is been one of the better governs of the last decades (we can´t forget that no person rules a country alone). So it´s good don´t judge a book only by it´s cover the but principally by his content...
I´m really not putting all that hope on Obama but i think that McCain is far more previsible in terms of internal and external politics (and i can´t say that i aprove very much his style). Anyway just try to look with critical mind to what are said...)
For the health debate i must say that we can correlate only socialism or capitalism to a good health system. I´m not really a fan of Fidel Castro but i think we can´t deny that Cuba have one of the best Health system and health technologies in the World and it´s much more to a socialism than a capitalism. In England, Brazil, and many other capitalist countries as far as i know they don´t let a person bleeding to death if they don´t have a health plan or sort of. I could be wrong since i don´t live and experience US reallity, but for what i know the US health system seems to be much more about business... Our public plans of health here in Brazil really sucks in many aspects but still life seems to be the priority.
About the Homo stuff: I really don´t have nothing against a person to be homosexual (be he or she) since he/she respects my heterosexual option (which i think is a very better choice

) and i think they (the homosexual) must be respected before law and before society. I have a couple of lesbian friends and a a gya teacher at the college and they are reaaly nice persons, so no worries or prejudices about that.
Well, we can find good and bad things in our own countries (be it Brazil, United States, Russia, China, Casaquistan, Romenia...) but like GE said (with better words in his second paragraph) we should be aware at what we intend at having a governament this or that way, to behaviour this or that way, to live this or that way...
So you really can have hope that things will change (obviuosly they will, but "best if for what we think it´s better") cause that´s a important step to achieve that.
Try to open your mind to some new angles of view and maybe you can start to see things in a different way. I´m not here to make some speech about it at the edge of my ignorance, but just giving a critical look to some things can make a real difference.