To measure enthusiasm, the pollsters asked respondents to say how interested they are in this November’s contest, on a scale of one to 10. Adding up the 8s, 9s, and 10s gives a good measure of who the most likely voters will be this fall.Two-thirds – 66 percent – of Latinos put themselves in this high-interest category. Last month, it was 68 percent. That’s much lower than the average of 80 percent in this poll for all adults.It’s particularly problematic for Obama’s re-election chances, considering some of the highest-interest groups are ones likely to vote for Romney – Tea Party supporters (89 percent), McCain 2008 voters (88 percent), conservatives (84 percent), those 65 and older (83 percent), Republicans (83 percent), and whites (81 percent).Several key Obama voting groups come in above 80 percent – post-grads (87 percent), urban voters (86 percent), college-educated women (84 percent), Democrats (83 percent), liberals (83 percent), Obama 2008 voters (83 percent), African Americans (81 percent).But Hispanics and young voters, two key pieces of the puzzle, see a big drop off. Young voters are even lower than Latinos, at just 61 percent.Consider that in July 2008, four-out-of-five Hispanics – 80 percent – were in the high-interest range. That rose to 100 percent by November, with 92 percent saying they were a 9 or 10.In this poll, just 52 percent of Latinos said they were a 9 or 10, below the 68 percent of all respondents. In July 2008, 64 percent of Hispanics said they were 9s and 10s.