It's the first time Jeremy Corbyn and Boris Johnson have gone head-to-head in the General Election 2019.
The pair have clashed in the Commons since Mr Johnson took over as Prime Minister, but this time, it was on a prime time slot on ITV.
The programme starts at 8pm.
The BBC will also air a leaders debate.
ITV viewers have submitted questions and they will reflect different viewpoints, according to the broadcaster.
Just select the answers you think are right below:
The leaders will stand behind podiums in front of a live audience of around 200 people.
Both will deliver an opening statement of one minute and a closing statement of 45 seconds.
The leaders of the other main political groups Jo Swinson, Nicola Sturgeon, Siân Berry and Nigel Farage were not invited to the debate and will take place in a different style of programme at 10pm.
We want your views on how the leaders do tonight. You can rate both leaders out of 10, tell us if their answers have changed your mind when it comes to voting, and tell us who you thought won.
