Ladies and germs, here's a preview of an article that will be running in tomorrow's Chronicle about Duke Performances. DP has offered free tickets for several recent shows; officials are citing an overbooked season, entertainment fatigue after the presidential election and lots of local options as reasons for slow sales. For the full scoop, read tomorrow's paper. In the meantime, here's DP Marketing Director Ken Rumble's Nov. 17 e-mail to DP patrons offering the free tickets: