Can Liz Truss deliver, deliver, deliver?

What does deliver, deliver, deliver mean? Liz Truss had it as her payoff on accepting the leadership of the Conservative party this afternoon, so clearly it means something to her. She told the Queen Elizabeth Conference Centre: 

My friends, we need to show that we will deliver over the next two years. I will deliver a bold plan to cut taxes and grow our economy. I will deliver on the energy crisis, dealing with people’s energy bills, but also dealing with the long term issues we have on energy supply. And I will deliver on the National Health Service. But we will all deliver for our country, and I will make sure that we use all the fantastic talents of the Conservative party, our brilliant Members of Parliament, our peers, our fantastic councillors, our MSs, our MSPs, all of our councillors and activists and members right across our country. Because, my friends, I know that we will deliver, we will deliver, we will deliver.