Campaign workers help candidates for government offices get elected. By calling voters, sending out fliers, advertising on TV, radio, and the Internet, and arranging for campaign appearances by the candidate, they educate the public about a candidate's strengths and concerns. Candidates for mayor, governor, Congress, president, and other local, state, and federal offices must use campaign workers and managers to handle many of the details of an election, such as budgets and expenses, fund-raising, and press relations. Campaign workers are needed all across the country, in cities large and small, to assist with primaries and elections.