In 1965, he led a campaign to register blacks to vote.
Many blacks voted with their feet and left the South to seek better conditions.
At the election, Clark lost as blacks voted to get him out of office.
Blacks not only could vote for officeholders, a few even held political office.
Everybody expects blacks to vote against whites - when given that much choice.
This would provide focus to the black population and show the federal government that local blacks would vote if allowed.
In 1964, 5,000 blacks could vote; now 600,000 are registered, and they use their ballots.
Though the message does not support any candidate, blacks historically have voted for Democrats 80 percent or more of the time.
White presidents paid obeisance even in the days when blacks could not vote.
Other spots urge blacks to register and vote in November.