Complex sentence: Stelmach would go on to stun pundits and even his own supporters when he led the Tories to an increased majority in the 2008 general election, winning 72 of 83 seats including 13 in Edmonton, their highest total in the capital since 1982.
Split into simpler sentences: Stelmach would go on to stun pundits and even his own supporters when he led the Tories to an increased majority in the 2008 general election, winning 72 of 83 seats. Notably, they won 13 in Edmonton, their highest total in the capital since 1982.