America's pre-primary 2016 presidential race season, will see Democrats use economic health and inequality as a major recurring theme in their campaign. The Elizabeth Warren movement had pushed all Democrats to act on these issues. Hillary Clinton, Bernie Sanders and Martin O'Malley have all started incorporating these topics into their campaign trails and policy ideas.

All of the campaigns had centered around GOP presidential candidate Jeb Bush's suggestion that more work hours are needed for part-time employees. They were also are attacking Republicans for saying no to a minimum-wage increase and are criticizing them on other policies they say eliminate the wage gap.

According to a report from The Philadelphia TribuneAmerica had seen these issues most acute in several large cities. A new study had pointed out 10 locations with the most substantial portions of the population who live in economically-struggling communities. It also highlighted the major cities where the gaps between the poor and those doing well have become largest.

The study showed that there are major issues in red states as well as blue. Many of the most struggling cities are in blue states, but many of the most unbalanced economies are in red states. The study was done by the Economic Innovation Group, a new group whose goal is to use private money and business solutions to solve some of the country's major economic problems.

According to a report from the Washington Post, those identified in the study are in cities from which 2016 GOP candidates originated. This is expected to be a focal point of Democratic attacks. Former Texas governor Rick Perry has pointed out that the job creation that he started in Texas didn't reach everyone. And prior to his stint as Wisconsin governor, Scott Walker was a Milwaukee County executive. Both Wisconsin and Texas have tried to push for boosting their state's minimum wage.

America is still living in times of economic challenge, according to John Lettieri, the Economic Innovation Group's co-founder and senior policy director.