attempt, congresswoman gabrielle giffords i m wolf blitzer. you re in the situation room. first, an apparent shake-up in the republican race for the white house after a turbulent week that saw herman cain finding new allegations of sexual harassment and rick perry stumbling sadly in a debate. newt gingrich leaping towards the top of a pack in a stunni stunningcome back. jim acosta is watching the race for us as he always does. where do things stand right now? some candidates are stepping in it, newt gingrich is stepping it up. what s old is newt. he s back. it is a wide open race. consider campaign road kill over the summer, newt gingrich is peaking at just the right time. he is leaping ahead of herman cain in a new poll and falling within the margin of error for the lead in another poll from cbs. the former house speaker may be scoffing at his numbers. all of this effort to create a two-man race when it was perry and romney. reporter: he already has a new racer l