Party-building is said to be one of the key benefits of the Iowa caucus system, and high participation in this year’s caucuses produced “substantial gains” in voter registration totals for both major parties, Iowa Secretary of State Paul Pate announced yesterday. Iowa’s same-day voter registration law allows citizens to change their party affiliation at the precinct caucus site. Tens of thousands of people did so on February 1 as Republican turnout exceeded the previous Iowa caucus record by more than 50 percent, while Democratic turnout was the second-highest in Iowa caucus history. CORRECTION: John Deeth notes in the comments that “Both parties allowed party changes, address changes, or new registrations [on caucus night] long before the Election Day Registration law started in 2008.”
I enclose the full press release below. As of February 22, Democrats have had a net gain of 29,181 registered voters, and Republicans have had a net gain of 21,262 registered voters. Both numbers will rise in the coming weeks, since county auditors have 45 days to process voter registration forms. The GOP will likely add more voters than the Democrats, because the Polk County Auditor’s office has not yet processed some 9,000 forms from Republican caucuses in Iowa’s most populous county, according to Kevin Hall, communications director for the Secretary of State’s Office. It’s not clear how many of those forms represent new registrants and party-switchers and how many are change of address forms for voters already on the rolls.
A plurality of registered Iowa voters are still aligned with neither party, but the number of no-party voters dropped by 47,211 between February 1 and February 22 and will decline further as county auditors continue to process forms from the caucuses.
Note: readers may notice that the numbers from different categories in the press release don’t add up to the overall net gains for each parties. Hall explained the discrepancy in comments I’ve posted below.