Conversation so far:
Who was Miers in regards to Charles Krauthammer?
Harriet Ellan Miers (born August 10, 1945) is an American lawyer who served as White House Counsel to President George W. Bush from 2005 to 2007.
What was Harriet Miers nominated for?
Associate Justice of the Supreme Court of the United States
Did Harriet Miers get the nomination?

Question: Why did she withdraw?
Self-contained rewrite: Why did Harriet Miers withdraw?