WATCH! Eventually Trump will be exposed as the fool he is. Eventually Climate Change will be so evident to all that the deniers will wonder what other lies have they been told.
In addition I have always hoped that archeologists will make a discovery that will provide irrefutable evidence that the Bible is a fraud.

Why not kick the idea around?
Throw it at the wall and see what sticks?
Run it up the flagpole?
[getyarn.io]

Impossible to break into two countries. The lines are not broken along some physical border. Even saying it is purely rural vs urban is misleading. We try this, we dissolve into civil war across the continent. Likely a civil war utilizing guerilla tactics. even if it didn't dissolve into war right away, the liberal outside DFW would have to relocate while the conservative between sacramento and the bay would need to do the same. There are enough people living as an outlier of their region that soon one side would argue one side needs all the land. Hence, inevitable civil war. If we had a possibility of a civil divorce, this would have been discussed long before this.

United we Stand, Divided We Fall. Let's face it, we are like a seriously dysfunctional family who kicks each others asses at Thanksgiving yet will always be there for one another when bad shit happens. We are americans and we are assholes!

It could be done.

Non-contiguous entities would be the result.

Coalitions of like-minded city states and their environs vs the backwater rural areas.

Think of former East/West Berlin, Monaco, the Ancient Greek city states and Alaska, Hawaii, Guam and PR.

The notion that we need contiguous borders is both false and antiquated.

Mega City One and the Free City of Denver are well past their time to shine.

We need balance. Diversity.

Your country might be better served by trying to find the reasons for those differences and reduce them. Conservatives are as neccessary in liberal democracies (Cf Hungary for illiberal democracy) as progressives. To eliminate either is to destroy the system.

I don't think it can or should be done. But it would be interesting if we could have a crystal ball and see how the conservatives and liberals would fare individually. Especially the conservatives LOL.

No way could the whole country be divided. However, dividing a state is not without precedent. During the Civil War, Virginia split into two parts. If the voters in California want to split it into two states, why not?

Another interesting concept is City-States. South of Chicago, the rest of Illinois is much more similar to the neighboring states of Iowa and Indiana than it is to Chicago. Many non-Chicagoans would be supportive of Chicago becoming its own self-governing city-state.

Not feasible as it isn't a north / south divide like the civil war or something ... liberals exist in urban areas throughout the US, conservatives tend to be rural throughout. You can't even carve out states traditionally considered liberal, like California, as if they were monoliths. There are tons of conservatives there as well.

Anyway, as others have pointed out, diversity is strength, and even if it weren't there's plenty of commonality to focus on.

I grew up in a conservative household and I can tell you that modern conservatism is very different from what I grew up with. It used to just be about changing slowly and cautiously and not for the sake of change; now it's about not changing at all, ever, and even regressing to some imagined Good Old Days that never really existed to begin with.

I'm liberal now myself but that has changed too. It used to be about standing up for the little guy, now it's shot through with elitism and plutocrats.

The way wealth is concentrating at the top and the middle class vanishing, I think liberals and conservative peons will have to band together to tar and feather the wealthy pretty soon ...

How would that even be possible? Red states, Blue states? Since these states are not geographically connected, that wouldn't work. This is not the first time the country has been divided. If you curb the things that lobbiests can do and get big money out of politics, it would change things dramatically in a positive way.

Diversity in its many forms -- including diversity of ideas and beliefs -- strengthen organizations and countries. I think we're a lot worse off now than when there actually were liberal Republicans and conservative Democrats. Besides, it can't be done either legally or practically (except for the obvious states, many states are such a mixture that deciding would be a problem)

The sticky wicket here isn't that it can't be done. Rather, it is what would happen after it is done. There would be massive emigration to the blue states, as red states receive most of the federal benefits from SNAP, WIC, & SSI. The red states are hurting over crappy jobs brought on by supporting the conservative-corporate complex over their people, which in truth, is what most of them voted for. It is possible for both red and blue countries to exist on the same continent. Just be prepared for a lot of relocations and a huge quality of life divide.

While the Deep South and Midwest states could be a contiguous red nation, there would have to be a two part blue nation with New England and Mid Atlantic states being East Blue and the West Coast similarly being West Blue. California and Virginia would have to be split for sure.

Well, dear crazy people, I come from the land that was broken into two countries . Actually, first it was broken into four countries ( I was in the British Occupied Zone.  We had Canadians come and inspect us and bring us chewing gum and powdered milk.  We did not know what to do with either one of those things. 
In 1961, the Iron Curtain became a wall and a no man's zone with bombs and watch towers and soldiers with guns shooting people who wanted to leave.  Nobody tried to get in, so that was good. Shit became really serious.   
When the wall came down in 1989, and Germany became reunited, you had totally different expectation and unity had to be legislated.  They are still struggling to this day with their Ossies ( the Germans from behind the Iron Curtain)   unification was neither as wonderful nor as easy as people expected. Lessons learned:  Do not split up a country that belongs together.  It is The United States of America, emphasis on United States. Grow up a bit.  Put more resources into training on how to overcome racism and how to practice tolerance and fairness.  You can do it, America. just get religion out of your public life.

Nope, the divisions are just there to help the very rich get away with whatever they like.

Actual real people can have disputes due to the inconsistent meaning of everything they say, the well messed up language. Such things as claiming Hillary was on the moderate right of the Democrat Party can easily be proven untrue, she's so far off to the right that even Sarah Palin can't see her...

But tons of lies and confusing terminology prevent us for a time from accepting that we all want the same thing, and the rich also all want the same thing.

Just to make things more confusing in the 2016 election there was an ambitious greedy multimillionaire playing for the very rich, and a renegade billionaire, who appears to be totally genuine in playing for the working person. That seems kind of confusing.

Unless the divisiveness becomes geogrp[hically oriented, it doed nto make sense to divide the country. We are too mixed in viewpoints and geography.

I remember in near the end fo ht emovie "Gandhi" how th eEnglish divided idia into India and pakastan, and it reupted into Civil War, because everyone on the wrogn side of the lines drawn were really pissed off and angry abotu haivng to move thi9er lives. (Note, the movie was based on actual events).

People are different and are going to have different values and beliefs. I feel like we need to try to understand and be respectful of ALL differences. In actual fact - if we stick exclusively to what we think we believe, then we are missing out on new perspectives. The older we get - the more we think we know it all; but we don't and never will. People can't learn and grow without being exposed to contridictory and conflicting ideas. If we isolate ourselves or draw imaginary lines between us - we limit our capacity to grow intellectually.

How would you divide country>

The biggest division between liberal and conservative is urban vs rural. Can't exactly split the country along those lines...

I think we’d be happier. However, how do we do it? Would it need to be 3 countries: West, Central, and the Eastern States of America? If we split, East and West could greatly regulate guns, keep abortion legal, welcome immigrants, keep DACAs, protect and honor science, facts as well as the arts, have strong laws re protecting the environment and climate... and the red central states can do what they want to do. Obviously lots to sort out, but I don’t see us finding common ground or learning to accept each other. Unfortunately, serious violence between us I think is a real possibility.

So would you force divorce for a couple that were opposite ends? This would be controlled as if not more so than the system that already exists. Where would the line be drawn would medical care that would work for the terminally ill force you to change your affiliation so that you could live a normal life if the cure was on the other side? What about people in the middle that did not take either side would you force them to chose?

I don't think it's a good idea. I wouldn't go as far as to vote that it's "crazy", but I don't think it's a workable premise.