UK Independence Party leader Nigel Farage has said he will produce a "fun" alternative broadcast if he is not allowed to take part in the leaders' TV debate at the next election.
David Cameron says any debate will involve only people with a "prospect of becoming prime minister".
He suggested the possibility of live-streaming on the internet while debates were running.
The first televised debates were held before the last general election in 2010, involving the three main party candidates - Labour's Gordon Brown, Conservative Mr Cameron and Liberal Democrat Nick Clegg.
It is not certain whether this will be repeated, but Mr Farage argues that, as his party is enjoying a sustained run of good ratings in the opinion polls, he should be included in any repeat.
He told The House: "If UKIP has good cause to think that it should be in the TV debates and it's excluded, we will provide an alternative form of entertainment on the evening.
"I'm working on some ideas. The internet is quite big these days... you could live-stream. There's one or two technical things we are working about and thinking about.
"It would be quite fun, wouldn't it? People would have their TVs and their laptops next to it."
Mr Farage added: "They might think they can exclude us but modern technology has such a power.
"To be honest, if it wasn't for the internet we wouldn't be here. YouTube and Facebook and all of this has helped us to reach an audience we would not have reached."