We do not know a lot about Harriet Miers, but we do know that she probably does not believe in privacy rights and is not a strong believer in civil rights for LGBT Americans. How do we know this? When asked, Ms. Miers stated that she did not believe that gay people have a right to consensual sex. If Miers were on the SCOTUS when the Lawrence V. Texas case was heard it would have been a 5-4 Supreme Court decision (instead of 6-3) to strike Texas' sodomy laws.
Is this alone enough evidence to support the idea that Miers will tilt the balance of SCOTUS even more to the right? Maybe not. However, I simply do not want to take that chance.
This alone should be enough evidence to disqualify Miers in the eyes of gay Americans.