This graphic shows why voters in this year's midterm elections are likely to hear such different stories about the economy: blue districts are more likely to have serious income inequality than red districts. That's why Democrats and Republicans have two conflicting narratives: What's true for one party's constituents often isn't true for the other's.

Why it matters: Each party has pushed a narrative that reflects the truth of their side while angering and scaring those on the other side. Until someone comes up with an agenda that encompasses both sides, politicians will be speaking to only half of the country at a time.

The trends:

Blue districts tend to have more households with incomes above $200,000 than red districts do.

But blue districts also tend to have more households with incomes below $10,000 than red districts do.

Blue districts are more likely to have high levels of income variation than red districts. Red districts have more people with similar incomes.

Between the lines: There's inequality within districts and inequality between districts. Yet neither party has successfully leveled the playing field while in control.

Democrats speak about policies that redistribute wealth and reduce income inequality because they live in unequal places.

Republicans resent the lecturing of "liberal elites" and embrace policies that promote opportunity, because they live in places where people are generally in similar economic situations.

What they're saying: There's political opportunity in deepening this divide. "Political messaging has always been a driver for people’s partisan affiliations…but what’s more interesting today is that we’re in an age of fear and loss," said Brookings' Nicol Turner-Lee.

"The moral of the story is that everyone plays off their base … the base is being driven by the fears of their own lived realities in the economy," Turner-Lee continued.

When there are big disparities in communities, "that is top of your mind in your speeches and the issues that you care about. But if you’re [seeing] it’s not that big of a problem … then your focus shifts away," said the American Enterprise Institute's Aparna Mathur.

Yes, but: There's huge political opportunity in bridging the divide, too. “Whoever can deconstruct these messages would be highly successful in winning the national election," Turner-Lee said.

Go deeper:

Blue districts have higher uninsured rates and more poverty

Wave watch: How the special elections could predict the midterms