He served as a Member of the National Assembly for Mkushi South from 1996 until 2006 and held several ministerial portfolios.
Chambeshi contested the 1996 general elections as the Movement for Multi-Party Democracy (MMD) candidate in Mkushi South.
[3] At the end of 1999 a cabinet reshuffle saw him become Minister of Science, Technology and Vocational Training.
[5] Chambeshi was re-elected in the December 2001 general elections with a reduced majority of 317.
[6] In January 2002 he returned to his previous portfolio, becoming Minister of Science, Technology and Vocational Training again.