Longtime MP Bill Casey is leaving his seat in the House of Commons as MP for Cumberland-Colchester-Musquodoboit Valley for a job promoting Nova Scotia in Ottawa. The former Independent MP will begin his new job Friday, and was first elected as a Conservative in 1988 before being tossed out of the party in 2007 because of a conflict over the Atlantic accord. Mr. Casey is also a former car dealer and investment broker who said he could now put those skills to work selling his home province.