Not only is New York City Mayor Michael Bloomberg -- known to have some kind of score to settle with Democratic Sen. Kirsten Gillibrand -- showing interest in Gillibrand's potential challengers, but now his long-time girlfriend is popping up as a sought-after GOP candidate. The New York Senate race is getting personal for Big Apple Mayor Michael Bloomberg. Very personal. Not only is the registered independent -- known to have some kind of score to settle with Democratic Sen. Kirsten Gillibrand -- showing interest in Gillibrand's potential challengers, but now his long-time girlfriend is popping up as a sought-after GOP...