The DUP has threatened to vote down the Budget later this month in protest of a Brexit deal that involves any new barriers Northern Ireland and Great Britain, including the one proposed by the EU's Barnier that would establish regulatory checks on goods in the Irish Sea. May needs the support of the DUP's 10 MPs to pass the Budget through the House of Commons. But she is also under pressure from her own party over Brexit.
The DUP has threatened to vote down the Budget later this month in protest of a Brexit deal that involves any new barriers Northern Ireland and Great Britain, including the one proposed by the EU's Barnier that would establish regulatory checks on goods in the Irish Sea. May needs the support of the DUP's 10 MPs to pass the Budget through the House of Commons. Without it, the government could be defeated, leading to a vote of no-confidence.