PEWAUKEE, Wis. -- A confident Mitt Romney predicted Tuesday that he would become the Republican presidential nominee and said “maybe it’s time to get going” in building a coast-to-coast campaign for the general election.

Republican Presidential candidate, former Massachusetts Gov. Mitt Romney has his picture taken as he hands out sandwiches to supporters at Cousins Subs on April 3, 2012 in Waukesha, Wisconsin. (Justin Sullivan/GETTY IMAGES)

With Republicans still casting ballots in primaries in Wisconsin, Maryland and the District, Romney said on a nationally broadcast radio program that he wants to start raising money and organizing a national campaign apparatus in preparation for taking on President Obama.

“I think I’ll become the nominee and, by the way, I want to become the nominee because I want to have our nominee start raising money, start organizing a national campaign and focus on President Obama and his agenda because this is time for us to start focusing on him rather than standing and focusing on one another in these primary contests,” Romney said Tuesday afternoon on conservative talk show host Sean Hannity’s program. “I think we’ve had, as of tonight, we will have had almost 35 or more state or territorial contests for the nomination. Maybe it’s time to get going.”

Hannity asked Romney to respond to speculation that rivals Rick Santorum and Newt Gingrich may form a ticket to stop Romney’s bid for the nomination. Romney said, “I don’t know what those two guys might do,” but added, “I expect to become the nominee.”

“I know I’ve got more delegates than the two of them combined,” Romney said. “They’re both able to do what they think is the right thing to do – but the delegates in our party are going to support the person who has the most delegates and has well over a million votes more than either one of them.”