From Longman Dictionary of Contemporary Englishhave something in your pockethave something in your pocketto be certain to win something such as a competition or an election The Democrats had the election in their pocket. → pocket
Examples from the Corpus
have something in your pocket• It looks like the team has a chance at the Aloha Bowl firmly in their pocket.• After all, we have Vargas in our pocket.• Shoppers will have more in their pockets and it will not cost companies vast sums to borrow for expansion.• You have money in your pocket, a cheque-book on you and one or two credit cards as well. 