>> reporter: beto o'rourke joining the protest here earlier today, so an economic message certainly something they're doing. but first and foremost they are trying to introduce themselves, to distinguish themselves to voters, particularly in the early voting states. south carolina is among those. the primary is not until the end of next february, but it is going to be a critical stop before this primary goes really across the country, that big super tuesday race, of course. joe biden in the front-runner nationally. he is the front-runner here in south carolina as well. but, when you talk to vo...