Increasing income inequality may partly explain volatility in the American political climate, according to pollster Molly Murphy.

Despite continued economic growth since the end of the Great Recession, Americans still appear to feel skeptical about the direction of the country, Murphy said.

“Even though the economy gets better and better, even though voters will acknowledge the economy is getting better and better, they are not seeing a change in their lives and that is why they are continuing to vote for the other party,” Murphy said Friday on Hill.TV’s “What America’s Thinking.”

Income inequality is on the rise in the U.S., with the top 1 percent bringing in more than 20 percent of all income in the U.S., according to a June 2016 report by the nonpartisan think tank, Economic Policy Institute.

Proclaiming an economically populist message played a key role in President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE's 2016 campaign. As a candidate, Trump said he would be an advocate for “the forgotten men and women of our country” who he said had been left behind by economic growth in the country's more urban regions.

Trump's tax law, which was passed earlier this year, was touted by Republicans as being a boon to middle-class households and the economy. Democrats, however, argued that the law mostly benefits wealthy individuals and corporations.