MIAMI: In his own unorthodox way, Donald Trump is evolving into a general election candidate.

The billionaire is talking about flexibility in his hardline immigration policies. He's pledging to moderate his bullying tone, acknowledging that women in particular may be turned off by his brash brand of politics. And he's calling for party unity and promising to help fellow Republicans win their own elections in November.

"It's very, very important as a Republican that our senators and congressmen get re-elected," Trump said this week.

To be sure, Trump is still very much doing things his way. He still jabs at rivals "Little Marco" Rubio and "Lying Ted" Cruz.

But there are clear indications Trump is confident he'll emerge from the turbulent primaries as the Republican nominee, and that he knows he has to broaden his appeal.

Trump's rivals, Rubio, Cruz and Ohio Gov. John Kasich, have one more chance to slow his momentum in Tuesday's winner-take-all contests in Florida and Ohio.

One party concern about a Trump nomination is that he would cost the Republicans both the White House and the party's Senate majority. In battleground states like Ohio and New Hampshire in particular, Republican senators up for re-election could be forced to talk more about Trump than their own campaigns.

Trump has made initial overtures to Senate Majority Leader Mitch McConnell and House Speaker Paul Ryan, and has endorsements from a handful of U.S. lawmakers and two governors. But his interactions with Republican elected officials appear to have been limited.

"I've had my phone on, but nobody's called," said Montana Sen. Steve Daines.

Following in the footsteps of many presidential nominees, Trump has begun signaling more moderation on policies that are important to general election constituencies, such as Hispanics and women.

Trump rocked the Republican race last summer with his call for building a wall along the entire the U.S-Mexico border and for deporting all 11 million people in the country illegally.

Now he's emphasizing the importance of politicians having flexibility on key issues.

"In terms of immigration and almost anything else, there always has to be some tug and pull and deal," Trump said during the most recent Republican debate.

The businessman has also raised eyebrows with his defense of Planned Parenthood, a frequent target of Republican candidates, saying "millions of women have been helped" by its health clinics. While Trump says the federal government would not fund Planned Parenthood as long as it's providing abortions, his tone when discussing the organization could be more palatable to women, who have made up more than 50 percent of voters in recent presidential elections.

Trump acknowledged in an interview Wednesday on MSNBC that he has work to do with women.

"In order to be victorious, frankly, I had to be very tough and I had to be very sharp and smart and nasty," Trump said. "I can see women not liking that. That will change once this is all over."

To some Republicans skeptical of Trump, his recent moves are less a smart general election play and more a sign that he lacks core principles.

"He is this amorphous political creature who will be whatever he needs to be for voters, whenever they need him to be it," said Kevin Madden, who advised 2012 Republican nominee Mitt Romney.