GOP ELECTORS VULNERABLE TO 'NET NUTS Tuesday,November 21,2000 By ROD DREHER WHILE all eyes are on Tallahassee, Susan Estes is at home in Wichita, Kan., quietly nursing her newborn and preparing to cast her Electoral College ballot next month for George W. Bush. She's also "going to be a lot more careful about who I open my door to." Why? Because yesterday, the Republican mom found out that her name, address and phone number have been posted on a Web site encouraging people to contact her about changing her vote to Al Gore. "It does make me a little nervous, ...