She was first elected in the 2000 federal election by 68 votes over incumbent Dennis Gruending of the New Democratic Party in the riding of Saskatoon—Rosetown—Biggar, as a member of the Canadian Alliance.
Gruending, ended up with the last laugh, defeating both McAllister and Saskatoon mayor Henry Dayday, who was running for the Liberal Party.
He won a plurality of just 220 votes over Dennis Gruending of the New Democratic Party.
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