Donald Trump and Hillary Clinton are expected to up their delegate leads and pull away from their rivals. But those aren't the only things that could happen. Be ready for surprises.
On Meet the Press, Rep. Tulsi Gabbard of Hawaii announced she'd resign her post at the Democratic National Committee to endorse Sanders, citing her military experience as the impetus for her decision.
Clinton made it clear she's ready to incorporate much of Sanders' populist, anti-Wall Street message into her own campaign. She said "more dreams die in the parking lots of banks than anywhere else."
After a bruising loss in the Palmetto State eight years ago, Clinton crushed rival Vermont Sen. Bernie Sanders by nearly 50 points in the Democratic primary.
The returns show the Rubios adjusted gross income was $335,561 in 2014, the most recent year he made available. He paid almost $65,000 in income taxes, a 19.3 percent rate.