Why Trump, Clinton Aren't Out of the Woods Yet

Donald Trump is now alone in the Republican race for the White House after Ohio Gov. John Kasich followed Sen. Ted Cruz's lead and bowed out of GOP field.

"As I suspend my campaign today, I have renewed faith, deeper faith that the Lord will show me the way forward and fulfill the purpose of my life," Kasich said.

Kasich's way forward may be to serve as Trump's running mate. So far, the Ohio governor has dismissed that idea, but Trump is open to it, saying, "Well, I would certainly consider him."

Trump said he'd also consider former opponents like Sen. Marco Rubio, R-Fla. He wants someone with legislative, or political experience.

Kasich could help Trump win the key state of Ohio, but other possibilities -- like Sen. Joni Ernst, or South Carolina Gov. Nikki Haley -- would possibly help Trump pull some of the female vote away from expected Democratic opponent Hillary Clinton.

But Sen. Bernie Sanders, D-Vt., says not so fast. Campaigning in Kentucky, he says he has momentum.

"And with your help, Kentucky will be the 20th state!" Sanders exclaimed.

He's won 18 states in his race to become the Democratic presidential nominee -- and he predicts West Virginia will be win number 19.

Sanders is also pledging to win the delegate-rich state of California. He'll need to turn super delegates already committed to Clinton if he has any chance of denying her the nomination.

Some polls show he'd do better than Clinton in a match up against Trump. The latest CNN survey shows the former secretary of state leading nationally against Trump 54 percent to 41 percent.

Voters view Clinton as better on health care, education and foreign policy, but Trump is viewed more trustworthy on the economy.

While Trump says he's going to work hard in the days ahead to unify the Republican Party and raise as much as $1 billion for the fall presidential campaign, some members of the GOP establishment say Trump will not get their endorsement.

Among them? Former Presidents Bush 41 and  43. And some Republicans say they'll vote for Clinton.

While Trump may have some difficulties uniting a bruised Republican Party in the days ahead, Clinton has her own challenges.

She must still overcome Mr. Momentum -- Bernie Sanders -- and the ongoing investigation of her email server, including a ruling by a federal judge Wednesday that she may have to give a deposition in the case.

Her former staffers are being questioned over the next eight weeks. But if questions remain that only Clinton can answer, she could be deposed starting around July.

The former secretary of state created a private email server to conduct government business. At issue is whether she did that just so she could skirt the laws requiring her to make those emails public because they may have contained content damaging to Clinton.