After what seems like one of the world's longest preludes, the voting begins today in the 2012 Republican primary race. Two Texans -- Gov. Rick Perry and Congressman Ron Paul -- are in the race, with Paul expected to be a top-two finisher while Perry battles for third place.
Courtesy of The Associated Press, here's a rundown of the Iowa race by the numbers:
20/19/18: The percentages for the top three GOP contenders (Ron Paul, Mitt Romney and Rick Santorum) in an Iowa survey released Sunday by Public Policy Polling.
49: The percentage of likely caucus-goers who said last week in a Des Moines Register poll that their mind was still not made up.
1: The percent of the American electorate that lives in Iowa, site of the nation's earliest presidential contest.
5: The percentage of Iowa voters who participated in the 2008 GOP caucuses.
24: The percentage of New Hampshire voters who participated in that state's 2008 GOP primary (New Hampshire is the next contest after Iowa).
0.06: The percentage of American voters who will be caucusing on Tuesday in Iowa if turnout is the same as it was in 2008.
0.015: The percentage of American voters who will be voting Tuesday for the winner of the Iowa Caucuses, if recent opinion polls are accurate.
3: The number of different leaders in the three Des Moines Register polls from October, November and December (Herman Cain, Newt Gingrich and Mitt Romney).
7: Number of lead changes in Gallup's national polling of the GOP presidential race since last May, with Mitt Romney, Herman Cain, Rick Perry and Newt Gingrich all on top at one time or another. According to Gallup, this phase of the nominating contest is "the most volatile for the GOP since the advent of polling."
60: Percentage of GOP caucus-goers in Iowa in 2008 who said they were a born-again or evangelical Christian.
11: Percentage of those 65 and older who support Ron Paul, according to Public Policy Polling's most recent Iowa survey.
31: Percentage of those under 30 who support Ron Paul in the same survey.
76: Age of Ron Paul.
25: Mitt Romney's percentage of the vote in the Iowa Caucuses four years ago.
24: Mitt Romney's percentage in last week's Des Moines Register Iowa poll.
45: Percentage of all campaign ads on broadcast TV in Iowa last month that were attacks against Newt Gingrich, according to the ad-tracking firm, Kantar Media CMAG.
6: Percentage of all campaign ads on broadcast TV in Iowa last month that were in support of Newt Gingrich. 52: Percentage drop in Gingrich's standing from November to December in the Des Moines Register poll (from 25 percent to 12 percent).
150: Percentage gain in Santorum's standing from November to December in the Des Moines Register poll (from 6 percent to 15 percent).
25: Number of Iowa visits by Mitt Romney since last June, according to the Washington Post.
262: Number of Iowa visits by Rick Santorum since last June, according to the Washington Post.
33: Number of campaign events Rick Santorum has held in Iowa at Pizza Ranch restaurants, according to Santorum.
30: percentage of likely caucus-goers that have seen one or more candidates in person during the Iowa campaign, according to Public Policy Polling.
-- John Gravois