In 2012, candidates needed either one percent or 500 signatures (whichever was lower) from Democrats in each of the state's 50-plus congressional districts. They had two months to do so -- which, particularly if you're hoping to keep expenses under $5,000, is a time crunch. Other states work similarly; some don't.
A contemporary definition of rank-and-file is prevalent in labor union vernacular when referring to general membership and not union leaders. Rank-and-file generally means the employee doesn't occupy a high-level position within the organization.
Classification Jobs are classified into an existing grade/category structure or hierarchy. Each level in the grade/category structure has a description and associated job titles. Each job is assigned to the grade/category providing the closest match to the job. The classification of a position is decided by comparing the whole job with the appropriate job grading standard. To ensure equity in job grading and wage rates, a common set of job grading standards and instructions are used.