How does one persuade potential voters who still have no strong opinion about Clinton and Trump at this point in time?

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This map represents my opinion on the status of the 2016 Presidential Election today.¹ Click on it to see a larger image.

Absent some major tragedy, in November Donald Trump will win 180 Electoral College votes from 22 states and Hillary Clinton will win 192 Electoral College votes from 15 states.

It takes 270 Electoral College votes to win the election, so they both will have to continue to campaign right up to November 8. At this point in time, undecided voters in Maine, New Hampshire, North Carolina, Florida, Wisconsin, Iowa, Colorado, New Mexico, and Nevada will determine the outcome of the 2016 Presidential Election.

Hillary Clinton has a somewhat tenuous lead in Michigan, Pennsylvania, and Virginia. Donald Trump has a somewhat tenuous lead in Arizona, Ohio, and one Maine congressional district. As long as they continue to actively campaign, either could screw up and lose those states because enough voters are uncertain about their choice.

In other words, even though the choice is between Hillary Clinton and Donald Trump and even though their policy proposals, styles, and personalities are clearly and radically different, some voters are undecided. And some are uncertain.
How exactly does one persuade people who have no firm opinion at this point in time?

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Footnotes:

¹This week's "not really news" headline story from all the major press that Ford is planning to move its small car production to Mexico, outside the U.S. along with all the other American car manufacturers, occurred while Trump was in Michigan. Whether this reminder of an announcement first made in 2015 will affect Clinton's hold on Michigan's 16 Electoral College votes will be seen in future polls. It's the kind of story that places Michigan in the category of "Clinton's to lose" states.