The ninth debate was held in another early primary state, South Carolina, and aired on CBS News. The debate was moderated by John Dickerson in the Peace Center in Greenville, started at 9 pm ET and went for 90 minutes. Major Garrett of CBS and Kimberley Strassel of WSJ also asked questions.[165] To participate in the debate, a candidate had to have either (1) placed among the top five candidates in the popular vote of the New Hampshire primary, (2) placed among the top three candidates in the popular vote of the Iowa caucuses, or (3) be among the top five candidates in an average of national and South Carolina polls over the four weeks beginning January 15 (that are recognized by CBS) and have received at least 3% in Iowa or New Hampshire or the South Carolina or national polls. The day before the debate, Ben Carson was invited to join the other participants: Jeb Bush, Ted Cruz, John Kasich, Marco Rubio, and Donald Trump.