U.K. Says It Has Sent EU Ideas For Reworking Brexit Deal

The UK government has sent informal documents to the EU outlining ideas for a new Brexit deal, aiming to replace the Northern Ireland backstop. EU Commission President Jean-Claude Juncker is open to removing the backstop if the UK's plan meets its objectives. Meanwhile, the UK Supreme Court is reviewing whether Prime Minister Boris Johnson's suspension of Parliament was lawful, with a decision expected soon.

What is the significance of the October 31st deadline mentioned in the text?

What are the criticisms regarding Johnson's suspension of Parliament?