The DNC is responsible for articulating and promoting the Democratic platform and coordinating party organizational activity. When the president is a Democrat, the party generally works closely with the president. In presidential elections, it supervises the national convention and, both independently and in coordination with the presidential candidate, raises funds, commissions polls, and coordinates campaign strategy. Following the selection of a party nominee, the public funding laws permit the national party to coordinate certain expenditures with the nominee, but additional funds are spent on general, party-building activities. There are state committees in every state, as well as local committees in most cities, wards, and towns (and, in most states, counties).