Delaware Senate candidate Christine O'Donnell will not appear as previously scheduled on CBS's "Face the Nation" Sunday, according to a CBS spokesperson.

She is still slated to appear on "Fox News Sunday," which will also host veteran GOP strategist Karl Rove.

Observers note that O'Donnell's abrupt cancellation on CBS may be her way of avoiding negative press as reports of her extreme views have begun to surface throughout the week.

She won Delaware's Senate GOP primary Tuesday over establishment pick Rep. Mike Castle, and now trails her opponent Chris Coon by 11 points.