Complex sentence: After Prime Minister Stephen Harper prorogued parliament to avoid a non-confidence vote, Liberal leader Dion resigned and was replaced by Michael Ignatieff, and when parliament finally resumed in January, 2009, the Liberal Party decided to support the Conservative government's new proposed budget.
Split into simpler sentences: After Prime Minister Stephen Harper prorogued Parliament to avoid a non-confidence vote, Liberal leader Dion resigned and was replaced by Michael Ignatieff. When Parliament finally resumed in January, 2009, the Liberal Party decided to support the Conservative government's new proposed budget.