Just because more people are signed up to vote doesn't mean that they actually will. Using the federal voters list along with the provincial list added several hundred thousand names. What was the voter turnout in the last federal election? Not that great. Also, many of the new voters are, you guessed it, young voters. I'll tell you that not too many of my friends actually get their butts to the polling station come election day. Furthermore, youth voting drives in the US have done wonders in creating a larger voters list but little to actually increase turnout.