What to Know Ahead of the UK Election's First Big TV Event

The first thing to get out of the way is that this isn't a debate. It's a grilling of both party leaders, separately, by a host and audience. UK Prime Minister David Cameron and Labour Party leader Ed Miliband will appear Thursday evening in a joint Channel 4 and Sky News Battle For Number 10 broadcast. Cameron ruled out a head-to-head debate earlier this month. Thursday's event is a live 90-minute programme in front of a studio audience of 100 people.