These are the results of the Pew Poll that is linked at the Washington Times website and published Oct 11, 2005:
Opposition to Miers is largely partisan, but she has not drawn enthusiastic support from conservative Republicans. A narrow majority of conservative Republicans (54 percent) favor her nomination.
So, 100% minus 54% equals 46%. But it doesn't equal 46% opposed to Miers:
Digging into the poll, 54% of conservatives support her nomination, 9% did not and 37% were undecided.
How do those numbers compare to the initial reaction among the same group when the John Roberts nomination was announced?