Your questions about the U.S. midterms, answered

If the U.S. midterms don't go favourably for the Republicans, are there safeguards in place to prevent voter interference? Or might the Republicans emerge victorious despite what polls have said? Could the president be impeached if Democrats win both the House and Senate? And what might the results mean for the 2028 presidential election? Washington correspondents Katie Simpson, Paul Hunter and Willy Lowry answer listeners' questions in the final days before the midterm election.