A rabbi protests the recent Mosque attack (Photo: @Ali_Najmi)

Republican voters in Iowa will gather at 8pm EST tonight for one of the biggest days of the presidential primary campaign.  Here are some highlights:

Here's a direct explanation of how the caucus works.

While here's a "Survival Guide" for tonight.

The candidates are battling to beat expectations.

Getting deep into the weeds, there are six Iowa counties to watch.

Mitt Romney's campaign looks beyond Iowa.

While his opponents finally start taking shots at him.

His campaign is quite different from Rick Santorum's.

Santorum's V-neck sweaters make the New York Times.

Swinging back to New York:

Senate Majority Leader Dean Skelos says there's a "good chance" of increasing the total number of state senators.

A lobbyist involved in former State Senator Carl Kruger's corruption case will also plead guilty.

Assemblyman Jack McEneny, a key player in the redistricting process, discussed its timeline.

Public Advocate Bill de Blasio hired a veteran D.C. operative to be his new communications director.

One of de Blasio's aides, Kirsten John Foy, speculates on making a 2013 run for term-limited Councilman Al Vann's seat.

Governor Cuomo signed a tax incentive for handicap accessible cabs.

Almost 100-year-old police demographic maps create an interesting perspective on the NYPD's new demographics unit.

Mayor Bloomberg doesn't make his own restaurant reservations.