Two British opposition parties want to hold elections even earlier than Prime Minister Boris Johnson has proposed as they try to ensure the country doesn't leave the European Union without an agreement.

The Scottish National Party and the Liberal Democrats say they will push for a Dec. 9 election, three days earlier than Johnson has proposed and years earlier than the next scheduled vote in 2022.

They also plan to ask EU leaders to extend the Brexit deadline to at least Jan. 31 to provide more time to debate Johnson's withdrawal agreement.

Labour leader Jeremy Corbyn speaks at an activists training event at the GLO Centre in Motherwell, Scotland. Saturday Oct. 26, 2019. (Andrew MilliganPA via AP)

Labour leader Jeremy Corbyn speaks at an activists training event at the GLO Centre in Motherwell, Scotland. Saturday Oct. 26, 2019. (Andrew MilliganPA via AP)

Johnson says if lawmakers approve a Dec. 12 election he will attempt to push his Brexit deal through Parliament quickly. He is seeking to delay Britain's Oct. 31 Brexit deadline by only a few weeks to keep pressure on lawmakers.

Union flags and an umbrella tied to railings in front of Parliament in London, Friday, Oct. 25, 2019. Politicians in Britain and the European Union seem to be looking to each other to break the Brexit deadlock. (AP PhotoKirsty Wigglesworth)

Union flags and an umbrella tied to railings in front of Parliament in London, Friday, Oct. 25, 2019. Politicians in Britain and the European Union seem to be looking to each other to break the Brexit deadlock. (AP PhotoKirsty Wigglesworth)

Various flags and banners fly in front of Parliament in London, Friday, Oct. 25, 2019. Politicians in Britain and the European Union seem to be looking to each other to break the Brexit deadlock. (AP PhotoKirsty Wigglesworth)

Various flags and banners fly in front of Parliament in London, Friday, Oct. 25, 2019. Politicians in Britain and the European Union seem to be looking to each other to break the Brexit deadlock. (AP PhotoKirsty Wigglesworth)

A cloudy sky over the River Thames by Parliament, right, in London, Friday, Oct. 25, 2019. Politicians in Britain and the European Union seem to be looking to each other to break the Brexit deadlock. (AP PhotoKirsty Wigglesworth)

A cloudy sky over the River Thames by Parliament, right, in London, Friday, Oct. 25, 2019. Politicians in Britain and the European Union seem to be looking to each other to break the Brexit deadlock. (AP PhotoKirsty Wigglesworth)