WHAT VIET NAM VIETS RALLY/
Just the oppposite. Likely Voters polls are cooked polls. Every pollster relies on correct predictions for attention, so he adjust his polls to fit his own expectations, and calls this "likely voters." But the real data is Registered voters.
Problem: many polling outfits simply pull "registered voters" at random, and then take guesses at why their data doesn't fit expectations. So cheap outifts, like Rasmussen, etc., know their RV data is so bad, they don't bother publishing it, then they make guesses. It's really no more useful that the Iowa markets.
If you want to REALLY know polling data, look at RVs of a long-established, commercial polling firm, like Gallup. Forget academic firms; their sampling is usually atrocious. Forget newbies, like Rasmussen and Zogby; they use "innocative" unproven methods at guessing. Forget polls too strongly associated with a single client, like Yankelovich (Time); they are pressured to guess by clients who don't like surprises and will, out of ignorance, blame them for statistical outliers.