Make yourself the obvious choice. Maximize every portion of your job packet to attract the recruiter's attention.
As she looks through the giant slush pile of application packets she gets every day, a recruiter uses that data and her impressions to sort. Who goes to the top, who to the bottom? The one with ten years or experience or three? A master's degree or a bachelor's? Every part of your job application letter is weighed in the calculation of who to see for the job. Each element of your cover letter can be a reason to bring you to the head of the line.