The UK economy ground to a halt in the three months leading up to the end of October, official data show. The political parties competing in Thursday’s high-stakes general election are promising to fix that — but the impact of their policies is far from certain. “It’s impossible to say, under any serious economic model, under which party’s manifesto the economy would do better,” Paul Johnson, director of the nonpartisan Institute for Fiscal Studies, recently told reporters. This has a lot to do with the complex choice voters face. Should the Conservatives and Prime Minister Boris Johnson win a majority, the United Kingdom is expected to push ahead with a “hard” Brexit deal that could harm the economy. Johnson has also sworn to negotiate a detailed agreement on future terms of the United Kingdom’s relationship with the European Union in just one year. If he can’t get a deal in time, Britain would face significant new trade barriers with its largest export market. The alternative is even more alarming for some businesses and investors. Jeremy Corbyn’s Labour Party has promised to raise corporate taxes, empower unions and give 10% of companies’ shares to their workers. A Corbyn government would also nationalize key utilities, including water, energy infrastructure, railways and broadband. In the eyes of the business community, those plans offset the party’s well-received pledge to give UK citizens a chance to cancel Brexit. “If there were a Labour-led government, you get the potential positive from its Brexit policies, but you get the negatives from its very anti-business policies,” said Ruth Gregory, UK economist at Capital Economics. Here’s where the Conservatives and Labour stand on top issues affecting business and the economy. Boris Johnson’s Conservative Party Jeremy Corbyn’s Labour Party