I think the current rating in electability is: Gatsas>Forrester>Van Ostern>Sununu>Connolly.
Idk about the rest, but Gastas is a pretty weak candidate who only won re-election against a B-list opponent by the skin of his teeth.
In a city election, that's pretty good for the Republicans.
Manchester is a Republican stronghold, IIRC.
I wouln't say so - it's a sort of mixed. But it's surely more conservative then Concord, and, probably, slightly more then Nashua. Even among Democrats in Manchester there are somewhat conservative-leaning legislators