The CBC Election Pollcast, hosted by CBC poll analyst and ThreeHundredEight.com founder Éric Grenier, explores the world of political polls, their influence on the media and the trends they are showing.

Joining Éric on this week's podcast is Greg Lyle, president of the Innovative Research Group. His latest in-depth poll looks at how the parties and the leaders are doing so far in this long campaign.

What swing votes are at play? Who is making inroads on key questions? And what are Canadians hearing about the three main party leaders?

Listen to the podcast above, or find past episodes and subscribe here.