Rank Northeastern and Midwestern metros from most liberal to most conservative

[ElectionsGuy]

According to the Census, there are 22 metropolitan areas in the Midwest and Northeast (if you exclude Washington and Baltimore, which are both technically in the south). For the most conservative ones, Milwaukee actually didn't even vote for Romney.

Milwaukee:

Obama: 568,022 (50.9%)
Romney: 535,645 (48.0%)

However, Cincinnati is probably the safest bet for the most conservative one.

Cincinnati:

Romney: 590,322 (57.2%)
Obama: 425,903 (41.3%)

And Indianapolis is conservative, but not as much as Cincinnati.

Indianapolis:

Romney: 468,225 (53.6%)
Obama: 387,783 (44.4%)

For most liberal, Boston has got to take the cake.

[ElectionsGuy]

Are you including Kentucky parts of Cincinnati?  How much does that push it even more into the conservative camp compared to just including the Ohio side?

The Cincinnati metro includes parts of rural Kentucky and Indiana, as well as suburban areas in Kentucky. With just Hamilton and the three main suburban counties in Ohio, it looks like this:

Romney: 439,271 (55.2%)
Obama: 345,682 (43.4%)

So suburban Cincinnati in Kentucky does move it to the right a little bit. Not much though. And the rural counties, including the one in Ohio, barely do anything.