Indeed, some earlier polling bears this out.
Here's the Wall Street Journal poll out in September, "Few Voters See Clinton’s Health, Trump’s Taxes as Top Concerns — WSJ/NBC News Poll":
New WSJ/NBC poll: Americans' top concerns with Clinton and Trump: https://t.co/ekcNuOuVb5 pic.twitter.com/gVSlc246e7— Capital Journal (@WSJPolitics) September 22, 2016
Some of the recent lines of attack that presidential campaigns are using against each other are drawing little interest from voters, among them Democratic criticism of Donald Trump’s refusal to release his tax returns and Republican comments about Hillary Clinton’s health, a new Wall Street Journal/NBC News poll finds.
Instead, voters are more concerned about broader issues that have dogged the two candidates for months, the poll finds. Those include Mr. Trump’s temperament and inflammatory comments about women, immigrants and other groups, and Mrs. Clinton’s use of a private email server while she was secretary of state, as well as her decisions dealing with Syria, Iraq and Libya.
The survey results suggest that the candidates’ biggest vulnerabilities are issues with deeper roots than the some of the latest campaign-trail attacks making headlines...