Nightmare Senate Scenario for Dems

[Landslide Lyndon]

Frighteningly plausible. Hell, Toomey and Johnson could pull it out.

I'd like to see what a Johnson/Hillary Clinton voter looks like.

Maybe similar to a Gore/Santorum voter in 2000?

Santorum was a populist and friendly with the unions.
Johnson is a hardcore tea-partier that has nothing to show during his first 4 years as a senator other that partisan attacks and gridlock.

[Landslide Lyndon]

Also, unless the Republican president thwarts his party's extremist agenda he is never going to have 50/50 approvals. The Democrats will almost unanimously hate him, just as much Republicans hate Obama, and they will be motivated this time to go to the midterm polls.
Polarization works in two ways you know.

Look at how the guy took on the mission of pushing Bush's partial privatization of Social Security (as a Sentor representing Pennsylvania).

And look what happened to him two years later.