You all remember the amazing mess that followed the 2000 general election in Florida? Questions about allowing military absentee ballots, the allegedly confusing Votomatic ballots, and the improperly punched votes -- hanging chads, pregnant chads, dimpled chads. The battle over the recount reached the U. S. Supreme Court.

The final official margin was 537 votes out of 6 million votes cast. That was the difference between a Bush presidency and a Gore presidency. It was a vivid object lesson of the principle that every vote matters.

That's why people get so exercised about vote fraud. I want to do all we can to ensure that only eligible people vote, that an eligible voter votes only once, and only in his place of primary residence, and that his vote counts exactly once. Whatever it takes within reason to make that happen -- showing ID at the polls, better optical scanning machines (but never, never, NEVER, an all-electronic system -- there has to be a voter-marked paper ballot), even purple dye on the thumb.

A fraudulent vote isn't a victimless crime. Like counterfeit currency, a fraudulent vote dilutes the value of every other vote.

Matters of life and death, war and peace, thrift and profligacy can hang on one vote per precinct. If only eligible voters had voted in Florida in 2000, what would have been the outcome? Would Bush have one by a bigger margin? Would Gore have won?

One form of vote fraud to which Florida is especially susceptible is dual-state registration. Florida has plenty of snowbirds who winter there and summer in New York, the Midwest, whereever home used to be. Dual-state residents are anxious to establish Florida residency because of the tax benefits, particularly the lack of a state income tax.

Registering to vote would help establish you as a resident of Florida, but you might not think to delete your registration in your old home state. In August 2004, the New York Daily News did a computer analysis, matching New York City voter registration records against the entire state of Florida and found 45,882 apparent matches.

Dual registration is fine, as long as you only vote in one state.

Officials in both states acknowledge that voting in multiple states is something of a perfect crime, one officials don't have the means to catch.

If you are caught, it's "a federal offense punishable by up to five years in prison and a $10,000 fine."

When the story broke on Friday about Kathy Taylor's dual homestead exemptions, I wondered about dual registration, too, so I called the Broward County Supervisor of Elections. I was told that Lobeck was still on the rolls, but not Taylor. An anonymous e-mail said I got the wrong answer, and I thought that it was possible the woman on the phone didn't understand me or I her.

Over the weekend I remembered: I have Florida voter registration and history data on my computer from a project I helped with a few years ago. I don't have data directly from the county election board, but the Republican National Committee collects voter registration records from every jurisdiction in the country, standardizes addresses, matches names with phone numbers, and takes 50 different data formats and rearranges all the records into one standard format. The Democrats do the same thing. It's all to help candidates figure out how to get their message directly to the most frequent voters.

The data I have was processed by the RNC in the summer or fall of 2002, long before running for mayor was even a gleam in Kathy Taylor's eye. It shows that she and William Earl Lobeck, Jr., were registered to vote at 704 Royal Plaza Drive, Fort Lauderdale, Florida, 33301. Taylor registered to vote in Broward County, Florida, as a Democrat on February 5, 2000. That info is copied by the RNC directly from the original registration record. Her registration number is listed as 10391553.

The local election board also tracks each election in which a voter casts a ballot -- school board, city elections, runoffs, etc. The RNC doesn't preserve all the voter history information, just the records for major elections, like presidential preference primaries, state primaries, and general elections. Taylor's record shows that she voted in person in the 2000 Florida presidential preference primary, and by absentee ballot in the 2000 general election.

I also have voter registration records from the Oklahoma State Election Board, going back to May 1998. Taylor's voter number is 720088835, she registered to vote on October 2, 1988, and the records from the election board's December 2001 data show that she voted in person at what was then Tulsa County precinct 70 in the 2000 general election. (Precinct boundaries were redrawn in spring 2002; precinct 70 was teleported to east Tulsa, and old 70 was split between two neighboring precincts. Taylor and Lobeck are now in precinct 73.)

If these records are accurate, Kathryn L. Taylor committed federal voter fraud by voting twice in the same election, in an election and a state where every vote mattered.

I suspect I'm not the only one who has been able to dig up this information. Others with more time on their hands may be able to verify all this directly with the Tulsa County and Broward County election boards.

UPDATE: 12 pm, 2/28: Don McCorkell is holding a 1:30 pm press conference, Kathy Taylor is holding a 2:30 pm press conference. At a Democrat candidate forum today, she deflected a question about the issue, and then stormed out of the room as soon as the event was over.