Sen. Bernie Sanders's upset victory in Michigan was of historic proportions, but he still lags far behind front-runner Hillary Clinton in the delegate count.
Sen. Marco Rubio's fall to last place in the Republican field means the GOP needs another strategy to beat its billionaire front-runner.
If Trump wins the most states, the GOP would not be breaking establishment rules to deny him, but those rules are exactly what Trump voters decry.
Nancy Reagan's devotion to her husband and his success was integral to his political career. Every president, one expert says, should have a Nancy Reagan.