In the case of political polls, such participants might be more likely voters.
But is it a good place to spot likely Democratic voters?
The more attention the 17 percent flat tax gets, the less likely voters are to support it.
More than half of the likely voters said they still might change their minds.
More than a third of the likely voters thought one family member could cast a vote for another.
Targeting the most likely voters is even more important in this race.
"As you get closer to the election, all the various likely voter models work better."
The poll of 936 likely voters was taken from Jan. 9-12.
The longer the campaign went on, the less likely undecided voters were to back the President.
This is generally a short and simple survey of likely voters.