Roy,
Perhaps it's my old "teacher hat", or perhaps its just a personal reluctance on my part, but I'm not one who enjoys arguing a partisan ideological political point of view.
I suppose I have a couple of personal reasons for that.
Perhaps the biggest reason is that so many times, when I've come out in defense of something, I either changed my mind about the issue later, or realized that I would have been better off keeping my big mouth shut in the first place.

As I near my 60th birthday, it's easy to look back on some of the positions I've taken in the past with the same shock that I've felt when I've looked at my junior high photographs.
It's not that I would want you or anyone else to necessarily follow my example in taking this approach. (Maybe you looked GREAT in 7th grade?

) It's just that over the years, (as you alluded to with the meaning of words) political positions and party platforms change, just as the meaning of words can. I personally (and privately) favor some positions that you would probably regard as being quite conservative in nature. I also favor some positions that you would probably regard as being rather liberal, but I won't talk about these here either. I am not one to wave the flag of an ideology. To the contrary, I believe that ideological absolutism contributed to the 20th Century being the most violent in world history.
I will admit to being pragmatic, and loyal...in that, for example...
...being a retired public employee, I will support public employees, and whomever supports them.
I support the students of the public schools, as well as the Board, the administration and support personnel, and of course, teachers.
I support public forum and debate, though I personally dislike debating.
As far as "universal health care" and Social Security goes, I would probably support both concepts conditionally, but with the tacit understanding that we do not have a socialistic state. We are not Canada. There are many private medical businesses involved in our country, and compromises will always need to be worked out. I am a believer in political compromise whenever possible.
The reality that I perceive is that we have effectively had informal universal care for quite a while. There have always been charity cases in hospitals. To my knowledge, virtually everyone can get medical attention for life-threatening emergencies in our country. We have charity clinics out there in many, if not most cities. It's only the recent politicization of the medical issue that has blown the situation up to the point where it presently is. At least, that's my perception anyway.
Social Security is the only income that many people are able to get, and for the most part, they worked for it. You see the pitiful interest (or lack thereof) that people get on their savings these days. I THINK that may have been to encourage people to try to invest in the market, and how did THAT work out for many people's investments? (Some have indeed done well of course, but others?) A guaranteed retirement income is a wonderful thing. As with any good pension plan, Social Security is a personal contract with an individual. You pay in, you get back later. The longer you work, the more you get. If you live long, you get back more. If you don't? You won't.
If I had a good answer to many of the questions that you pose Roy, I'd clue you in, but truth be told, I do not.
The only thing that I can say I do believe strongly regarding these issues would be that ideology is not the answer.
Ideology, my friend, IS the problem, in my honest opinion. George Washington had pretty hard things to say about political parties, and I tend to agree with him:
"However combinations or associations of the above description (political parties) may now and then answer popular ends, they are likely in the course of time and things, to become potent engines, by which cunning, ambitious, and unprincipled men will be enabled to subvert the power of the people and to usurp for themselves the reins of government, destroying afterwards the very engines which have lifted them to unjust dominion."
GEORGE WASHINGTON, Farewell Address, Sep. 17, 1796
Now THAT'S a "Founding Fathers" quote for you.
As for your question about the importance of the Constitution's "original meaning"?
If you know your history, you also know how that document came into being with many bitter discussions, and how many drafts it took to do it. Even when it was more or less in final form, it would not be ratified by the states until the Bill of Rights was added. The Constitution will ever be interpreted and re-interpreted.
I believe that one of your favorite people to quote was ol' Ben Franklin, who, in response to a lady's inquiry as to what kind of government we would have, reportedly said " A Republic, Madam, if you can keep it."
The response in my mind would be "Well, we can, can't we?"
It just takes a little work...
Back to the banjo...