Greg Sargent at TNR makes an important observation about why the polls remain so close: A new Marist poll takes the novel step of asking registered voters which is more off-putting in an occupant of the Oval Office: dishonesty or excessive age. The results are surprising, and along with other polling along these lines, it should influence how Joe Biden’s and Donald Trump’s relative qualifications for the presidency are covered from here on out. The poll asked: Which is more concerning in a president, someone who doesn’t tell the truth, or someone who might be too old to serve? The results were lopsided: By 68 to 32 percent, respondents were more concerned about the lying than the aging. Given the relentless media focus on presidential age of late, that’s simply remarkable. While the poll doesn’t directly compare Trump and Biden on that particular question, it also finds that 52 percent of Americans say Biden has the “character to serve as president,” whereas only 43 percent say this about Trump. Fifty-six percent say Trump lacks the character to serve, which surely reflects public perceptions of Trump’s dishonesty. […] Voters grasp Trump’s world-historical levels of dishonesty. This week’s Pew poll found that only 36 percent of voters view Trump as “honest.” By contrast, 48 percent view Biden that way—not good enough, clearly, but Biden’s large advantage here is especially notable given that as president, he has been subjected to a far harsher media spotlight for the last four years. What the new Marist poll adds to…