He was sworn in as Premier on November 27 , 1967 .
When Roblin moved to federal politics in 1967 , Weir defeated Sterling Lyon and two other candidates to become the party 's new leader .
Weir was sworn in as Premier on November 27 , 1967 .
When Roblin moved to federal politics in 1967 , Weir defeated Sterling Lyon and two other candidates to become the party 's new leader .