I'm curious what you mean by this.
Space-time and the flow of information. People are able to move more freely, but more importantly information is able to move across the country in milliseconds.
As a result, representation is not longer pocketed as I believe it was initially designed. Politicians are criticized for making votes that reflect their constituents in order to band together with their party first and foremost.
National politics have lost their way.
People in the Midwest and the Appalachians are voting over illegal immigrants and tax cuts because that's why they're supposed to do, but in reality poor health care, the disruption of labor rights and Trump's trade war are larger threats.
And in the past this is something their
representatives would rightfully support.
Example, in NC people in Bostic and Lenoir were running on an anti transgender bill in response to Charlotte and winning because that's what was on the state/regional news and it was provocative.
Like breh, you're not even voting on local issues. You're voting based on a place you heard about, that you're almost never at, over the unemployment and drug crisis crippling your small town.
Further and more important, it increases the reach of lobbyist and corporate money. Put of state businesses are buying off politicians in places that don't get the net benefit.
We're pretty much crowdsourcing corruption at this point.