If you serve on a nonprofit board this week’s “Knight Cities” is especially for you. Raising money is part of the job for nonprofit board members, but there’s also a significant opportunity that isn’t taken advantage of nearly enough: influencing policy. BoardSource is the go-to resource for funders, partners and nonprofit leaders who want to magnify the impact of their nonprofits, and it has launched a new effort, supported in part by Knight Foundation, to encourage nonprofit boards to become effective advocates for the causes they represent. The campaign is called Stand for Your Mission. This week on “Knight Cities,” we talk to BoardSource President and CEO Anne Wallestad about this important work and the ways that nonprofits can amplify their impact.