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First Read: Four Super Tuesday storylines to watch

Does Clinton pull ahead of Sanders? What will the GOP establishment do if Trump runs the table? Follow the four storylines we'll be watching when polls close.

Virginia residents wait in line in the pre-dawn hours to vote in the Virginia primary at a historic property called the Hunter House at Nottoway Park in Vienna, Va., on March 1, 2016. (Photo by Jim Lo Scalzo/EPA)
Virginia residents wait in line in the pre-dawn hours to vote in the Virginia primary at a historic property called the Hunter House at Nottoway Park in Vienna, Va., on March 1, 2016.EPA

Chuck Todd

Chuck Todd is NBC News' chief political analyst and the former moderator of "Meet The Press."

Carrie Dann

Mark Murray