Pledge drive
（重定向自Begathon）
A pledge drive is an extended period of fundraising activities, generally used by public broadcasting stations to increase contributions. The term "pledge" originates from the promise that a contributor makes to send in funding at regular intervals for a certain amount of time. During a pledge drive, regular programming is followed by an appeal for pledges by station employees, who ask the audience to make their contributions, usually by phone or the Internet, during this break.