San Francisco, L.A., Chicago, Detroit, other big cities!

[TommyC1776]

Is there even an effective Republican Party in these cities I listed?

Obviously, in NYC there is.

[Verily]

There isn't really an effective Republican Party in NYC. They just occasionally convince big names to run.

Chicago, obviously not. The Daleys control the city. LA certainly has its share of Republicans, but I have a feeling that they're mostly organized to try to secede from LA rather than to win elections. San Francisco has more Greens than Republicans (slight exaggeration, but only slight). There might be some Republicans in white areas of Detroit, but I don't think there are many of those left these days. If there are, they probably have a similar attitude to Republicans in LA: secession.

[I spent the winter writing songs about getting better]

Minneapolis' Republican Party might as well be nonexistent. The Greens have won more elections than them in recent years.

[Queen Mum Inks.LWC]

Not really in the city of Detroit, but there is in Wayne County.  There's the 13th and 14th Districts (maybe 15th too - I don't remember).  I'm active in the 13th and know people in the 14th.  The Wayne County Republican Committee is pretty active - we just had our picnic - over 50 people.  We have a Young Republicans group - which is relatively new, but growing fast.  In terms of actually in Detroit, there's not really anything, but there's definitely a group in Metro-Detroit.

[cannonia]

I would guess the San Fernando Valley would have some party organization.  Who knows, though.  I would never put too much faith in California Republicans.

[CultureKing]

The republicans retreated from Seattle and now basically are trying to hold themselves up in Bellevue.

[Joe Biden 2020]

Doesn't Dallas have a decent Republican base (it is Texas after all!!!).

Oklahoma City (which I classify as a big city) definitely does.

[TeePee4Prez]

Philadelphia has some Republican power in Northeast and to a small extent South Philly. 

[Sensei]

plenty of Republicans to go around in Miami. Damn Cubans.

[Flying Dog]

There are rumored sitings of a Detroit GOP party but they have never been confirmed.

[Governor PiT]

LA's next mayor is a former Republican turned independent.