(OTT 102)OTTAWA, March 27--NEW KID ON THE BLOC--Bloc Quebecois leader Michel Gauthier enters his party's weekly caucus meeting in Ottawa Wednesday with newly elected member Stephan Tremblay. Tremblay, 22, is the second youngest MP ever and the youngest presently holding a seat in the House of Commons. (CP PH OTO) 1996 (stf-Fred Chartrand)fxc