Secret study cited "weirdness factor" among candidate weaknesses FEBRUARY 12--As he campaigns for the Republican presidential nomination, Rudolph Giuliani will have to contend with political and personal baggage unknown to prospective supporters whose knowledge of the former New York mayor is limited to his post-September 11 exploits. So, in a bid to educate the electorate, we're offering excerpts from a remarkable "vulnerability study" that was commissioned by Giuliani's campaign prior to his successful 1993 City Hall run. The confidential 450-page report, authored by Giuliani's research director and another aide, was the campaign's attempt to identify possible lines of attack against...