Today, National Public Radio released polling that is as promising for the Democrats as it is worrying for the Republicans.

The survey, conducted by Stan Greenberg and Glen Bolger, shows the Democrats maintaining a robust 52 percent to 37 percent lead on the generic congressional ballot question, when leaners are included. Even without the leaners, Democrats still maintain the 15 point lead, 47 percent to 32 percent. The kicker: the NPR poll surveyed likely, not registered voters.

While it's true that the Democrats have maintained very impressive leads in several recent polls that have included the generic congressional ballot question, almost every one of these previous surveys has measured support either among registered voters or all Americans -- neither of which is necessarily representative of the population going to the polls this November. The poll conducted by Greenberg and Bolger, however, measures support among likely voters, a population that has traditionally been less supportive of Democratic voters than larger groups like registered voters or American adults. Such a large Democratic lead is thus that much more impressive.

Even more important to note, though, is the fact that the generic Democratic lead seems to be holding up among the voters most likely to head to the polls on election day. In some respects, widespread support for Democratic congressional candidates is meaningless if that support does not result in tangible results, namely votes on election day. But if the poll is correct -- if voters are actually poised to go the polls for the Democrats and not poised to go to the polls for the Republicans -- a change in Congressional leadership in January is not only possible, it's probable. So much for the high-paid consultants and analysts who say the Dems aren't going to win this November.