Even though it's a small sample size, it can give some insight about sentiment if the margin of error is right and the methodology sound.
Last year the results were different because of the failure of Republicans to fully repeal the ACA, now with midterms, tax cuts and a SCOTUS seat on the line, wary Republicans and Libertarian types are warming up to the GOP. Trump is reaping the rewards of Obama putting the economy on even footing after 2008. When the full effect of tariffs and sadistic policies in the tax cut are felt, a Democrat will likely have to fix things again.
Often, voters claim they care about "the economy", when they don't fully grasp the dynamics of why an economy is on the up or down. There's also some tunnel vision in how you assess the success of an administration. Human Development indices aren't considered as strongly as they should be, opportunity costs aren't factored in and I'm more interested in questions like these:
How does the U.S compare to other countries when it comes to Mortality rates, life expectancy, civil rights and social justice, purchasing power, cost of living, manufacturing output?
What is the quality of healthcare services, do more people have access to affordable healthcare or less?
How many "Unicorns" are funded in the U.S?
How does the U.S rank in technological innovation, science, and education compared to her global counterparts?
What is the state of infrastructure compared to other global powerhouses?
The U.S also ranks 20th in the Global Broadband Speed League, how is this being addressed? - because it's a big problem.
How do we rank compared to other countries when it comes to Domestic Terrorism?
How effective is Congress compared to other Governments?
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