"I am offering a real choice and a new beginning. I am running for president because I have the experience and the vision to get us out of this mess," he said. "This November, we will face a defining decision. Our choice will not be one of party or personality. This election will be about principle."
Romney, who after more than three months of primary contests is widely expected to secure the GOP nomination, will campaign next in Pennsylvania. The state is crucial to his primary campaign not only because a victory there would be a knockout blow to his chief rival, Rick Santorum, who hails from the state, but it will also be a key battleground state in November.