Six presidential primaries are held across the United States on what the news media have dubbed the second “Super Tuesday”.
These primaries are a chance for former secretary of state Hillary Clinton to prove she can win outside the South, where non-white voters have dominated the Democratic contests. Her socialist rival, Bernie Sanders, has done better in Northern industrial states. Watch Ohio.
For the Republicans, it’s the last chance to slow down businessman Donald Trump. If he does poorly today, he is likely to fall short of a delegate majority. But if Trump wins, it is going to be almost impossible to take the nomination away from him. Crucial will be Florida and Ohio, the home states of Trump’s rivals Marco Rubio and John Kasich.