latinos across the nation are hoping to make their voices joining us is carlos diaz, a lecturer on government at harvard university. he teaches a course called "road to the white house." director of the national alliance of latin american and caribbean communities. professor diaz, i will start with you. tell us about this course "road to the white house," apparently one of the most popular courses on the harvard campus. carlos: it is. it is a course that looks at the political system from the point of view of campaigns. we go over what campaigns do -- voters. and the theory we know from campaigns from political science, to how campaigns actually work. campaign works, from fundraising to media to advertising to the conventions, the selections of the vice presidential nominee, you name it. karen: so it is more than a it is a real in-depth look at how campaigns work. carlos: and how the theory applies to the practice of running for president. karen: oscar, let me turn to you. talk about the role of the latino vote in the election. oscar: there is this belief that the latino vote will be decisive