What actually happens at a caucus? http://abcn.ws/zsvJXh

The Return of Top Line - http://abcn.ws/zWp9zU

Pragmatism vs. Purity - What's at stake for Republicans, according to Rick Klein: http://abcn.ws/yuMJr0

Cokie's View on Iowa - Overhyped, Absurd, But We're stuck with It - "It is Betty Sue coming over to Mary Jane and asking her to come to her candidate's corner, after all her home-baked brownies are in that corner. It is all about neighborly persuasion for personal reasons and predicting exactly how that kind of dynamic plays out is notoriously fraught with mistakes. The Iowa caucuses are overhyped and, frankly, absurd, but we are all kind of stuck with them. While they are about as helpful as a coin toss at predicting who the eventual nominee will be, the results do make a big impact on candidates' momentum. And, in politics, momentum is money." http://abcn.ws/xJDReX

Time to Anoint Romney? Not So Fast - From Matthew Dowd - Reason #4 - Romney must show at some point after New Hampshire that he can win a much larger share of the vote in places like South Carolina or Florida and beyond - a big challenge for him. http://abcn.ws/wBdfif

Counterpoint - Romney's Sitting Pretty - Matt Negrin explains how Iowa helps Romney, even if he doesn't win: Romney will need the wind behind him before a competitive South Carolina primary in a few weeks, and Florida's primary at the end of January. If he's able to finish first in Iowa and then meet expectations in New Hampshire by leading the other candidates by a wide margin, he might very well have the momentum he needs to withstand losses in the rest of the month's contests. http://abcn.ws/Aanh4J

Ground Game - Is Ron Paul's the Best? http://abcn.ws/xJI1sm

Who Will Win? From Anchor to Intern, some predictions from ABC News employees: http://abcn.ws/waoY4v

Where should we send Shush Walshe after this last Good Morning Iowa? http://abcn.ws/A2gwZ2

The Turnout - 120,000 in 2008… more Iowa stats: http://abcn.ws/yiIUkR

The Calendar - How Long Will This Thing Take? - Chris Good answers: And if we don't know by Jan. 21, it could be a while: http://abcn.ws/yFhsLn

Plan B - All but one person are going to lose tonight. Negrin looks at where the losers go from here: http://abcn.ws/wMjMmL

Perry's Literal D-Day Analogy - "This election is about stopping a president of the United States and his administration that is abusing the Constitution of this country, that is putting America on a track to bankruptcy, and folks, we're going to take America back. That's what this is about," Perry told the crowd as it gave him a standing ovation. "It is a powerful moment in America's history, and you are on the front lines. This is Concord, this is Omaha Beach. This is going up the hill realizing that the battle is worth winning." http://abcn.ws/zsvJXh

The Great Complainer - Romney's New Anti-Obama Line, according to Emily Friedman - http://abcn.ws/AyKb0a

The Liar - Gingrich's new Anti-Romney Line: "I was asked did I think he was a liar ,and I said yes," according to Elicia Dover.

Do you See Yourself as President, Ron Paul? Not Really - Flashback to Caucus Eve Terry Moran's must-see interview with Ron Paul. Moran: "When you lay your head on your pillow at night, do you see yourself in the Oval Office?" "Paul: Not really." http://abcn.ws/ADG4QC

Ron Paul Embraces Kelly Clarkson - http://abcn.ws/ztXvba

Our roundup of the last final pitch of campaigning - http://abcn.ws/zVgwMt

Romney Family Election Day Ritual - Chocolate Milkshakes, per Emily Friedman: http://abcn.ws/zpPqZP

The View from the Democrats Phoning into Iowa tonight, flying into Ohio tomorrow, per Devin Dwyer: http://abcn.ws/zMtJH6 Occupying the Des Moines Register homepage, per Katie Bosland: http://abcn.ws/yZtoVp

But how will Dems deal with the kind of frustration Matt Jaffe and Univision's Jordan Fabian found in West Liberty, Iowa's first majority minority town? http://abcn.ws/yP3zwV

What Did Rick Santorum Say? Welfare Comments Scrutinized -  http://abcn.ws/ydZH6e

GOP v. NFL - Romney as Aaron Rodgers, Ron Paul as the Bengals, Rick Perry as Eagles… who is Tebow? More harmless fun from Christina Capatides: http://abcn.ws/zXIaqG

The Grind - What's it like to cover this thing? Ask our off-air reporters and watch this very slick piece from producer Jake Whitman - http://abcn.ws/xGi82j