In the past, a presidential candidate did not immediately assume that some states would be out of his reach. Today we have red states, blue states, and swing states. If a candidate is a Democrat, they know that they will almost certainly lose the red states and win the blue. The election will be decided in the swing states. This is because we are so sectarian these days that most people interested in politics see things with an "us versus them" view. We would never consider voting for one of "them." We can no longer see ourselves as Americans with a collective future. We can no longer understand our neighbors, and know that they want the same things we want. We can't find any solutions because we are so barricaded behind our sectarian views that we are unwilling to compromise or even consider that the opposing view has merit. Gridlock is the result. Inaction is the only action. It doesn't benefit either side.
I think that there is an idea these days that we need to choose a team when it comes to politics and live by those decisions. I think that it is very destructive to view politics as picking a side, instead of trying to resolve an issue that better serves all of us as citizens.
A destructive force has emerged from the traditional "left versus right" view of politics. This is because they are constantly battling each other on all sorts of issues, which is hurting the general population. If they can not come to an agreement on basic things, things will only get worse.
They have a right to be, after the crash of 2008. It is just most people with common sense, seem to have a basic idea of what went wrong. The rest of the people just seem to be saving face or trying to maintain the lifestyle that led to the crash. Many people who were in power at that time still seem to think that way can work. Everyone else knows different. Creating a great divide between the left, right and everyone in between.
No, I do not think that there has been any destructive forces that have emerged it the politics of today. I think things today are the same as they have always been, and that not a whole lot is going to change for a very long time, which is good.