Democrats left in Romney States/Congressional Districts

[Nichlemn]

Not only that, a bunch of those Democrats won in close races and/or had their opponent implode. (All the 2012-elected Senators except Manchin were considered underdogs earlier in the year).

Susan Collins and Manchin are probably the only Senators left who are safe in states that favour the opposite party by more than a couple of points.

[Nichlemn]

Interesting that the Republican senate majority is more or less just the Republican/Obama seats minus the Democrat/Romney seats. The good news there is that Democrats don't necessarily need to win any Romney seats to regain the majority, just to consolidate the Obama seats which should be a lot easier.

Unfortunately not, since Democrats are a lot more open minded and prone to ticket splitting than Republicans are.

See: MD-Gov and KS-Gov

No way. Like, maybe this year it appears to be the case, but that's partially a result of just being such a bad Democratic year. In pretty much every other election cycle for decades, Democrats have done better at winning R-Presidential places than Republicans have done well at winning D-Presidential places. Even in 2010, Republicans won almost zero races at any level above D+5, while a decent number of Blue Dogs still survived in tougher terrain.

[Nichlemn]

What about Senate Republicans in Obama states? This is why Republicans have a majority currently, since we most of the red state Dems this year.

Cory Gardner (CO)
Marco Rubio (FL)
Kelly Ayotte (NH)
Chuck Grassley (IA)
Joni Ernst (IA)
Mark Kirk (IL)
Susan Collins (ME)
Dean Heller (NV)
Rob Portman (OH)
Pat Toomey (PA)
Ron Johnson (WI)

Kerry states are probably a better analogue, as Kerry lost by a similar margin to Romney, so it's about equivalent so far as PVI goes.

That takes us to:

Kelly Ayotte (NH)
Mark Kirk (IL)
Susan Collins (ME)
Pat Toomey (PA)
Ron Johnson (WI)

Only ME and IL are more than a couple of points Democratic-leaning.