During the political season, we often hear from analysts, experts, former candidates and consultants on TV. But what about the people who put politicians in office to represent them?   And what are the important issues that American voters care about?   Each week, we'll ask the same questions across a cross section of America and listen to what they have to say.   This week, we spoke with voters on the streets of San Francisco, Denver and Miami.   Here's what they had to say about the Stimulus bill and if it worked and with the mounting U.S. deficit, would they raise taxes or cut programs?