who was elected in PA-12 and what does it say about November

A conservative Democrat.
Not as much as one might expect, on the surface.

Here's George Will at TownHall.com...

The candidate who on Tuesday won the special election in a Pennsylvania congressional district is right-to-life and pro-gun. He accused his opponent of wanting heavier taxes. He said he would have voted against Barack Obama's health care plan and promised to vote against cap-and-trade legislation, which is a tax increase supposedly somehow related to turning down the planet's thermostat. This candidate, Mark Critz, is a Democrat.

And that just about exhausts the good news for Democrats on a surreal Tuesday when their presumptive candidate for the U.S. Senate in Connecticut -- the state's attorney general, Richard Blumenthal -- chose to hold a news conference at a Veterans of Foreign Wars hall to discuss why he had falsely said he fought in a foreign war. National Democrats may try to find a less damaged candidate for Connecticut, but first they may have to do that in Illinois.

Their candidate to hold the Senate seat Obama held, Alexi Giannoulias, has a problem: The failure of the bank owned by his family -- it made loans to Tony Rezko, the convicted developer who helped Obama with a 2006 property transaction -- may cost taxpayers many millions...

From there, he turns to Democrats trying to poke at GOP candidates-- and "their Exhibit A" is Rand Paul. For those who might be interested, Will goes into some detail on why those arguments are unimpressive...