Tuesday's 'Amtrak' primary runs on one timetable

Tuesday's presidential primaries in five states may be consequential, but they are not likely to be late. All five Amtrak corridor states — Pennsylvania, Maryland, Connecticut, Delaware and Rhode Island — close their polls at 8 p.m. ET, and polling suggests that winners may be declared pretty early in many of the races. Here's how to watch results of the Amtrak primaries.