On Thursday, May 6, Britain heads to the polls in what is widely expected to be a tight race, possibly ending in a rare hung Parliament, or minority government, as it's known in Canada.  The National is on location in London with reports on the voters, the parties, their leaders and candidates, as well as the big issues that play a part in the outcome.

In this in-depth feature, we also present a web-exclusive video by Peter Mansbridge with British broadcaster and author Alastair Campbell, who served as Director of Communications and Strategy for former Prime Minister Tony Blair.

Video from Thursday night's broadcast will be added to this webpage on Friday.  You can also watch The National online beginning at 10 p.m. ET on our Watch the Show  page.