It is very interesting that you can't find contact info for candidates. For fun, I went and tried to find it for those listed above as well.
I did find this on Bruce Casper: Campaign For Liberty — Davidson GOP Chair Supports Gay Libertarian Candidate for Mayor
Keith Speer's Facebook page with email: Keith Speer | Facebook
.. and this little piece in the Tennessean mentioning Don O’Donniley: Politicians late on paying property taxes put on notice | The Tennessean | tennessean.com
Which states:
Don O’Donniley, an attorney who also is seeking an at-large seat, said he was waiting for the settlement of a recent lawsuit so he would be able to pay the combined bill of more than $2,200 on two properties, including his Belmont Boulevard home.
O’Donniley said he’s been late with his payments in other years but has always paid the penalties and gotten caught up, usually by April. He said he recently fought a three-year battle with cancer, with medical expenses totaling $100,000, and regularly uses settlements from litigation to generate cash flow to pay his bills.
“The more relevant question is, has someone failed to pay them over time?” he said. “If you’re behind and you don’t catch up, that’s a problem. ... I can’t imagine why you’d be complaining about somebody paying interest.”
He said he would pay his taxes before Election Day, which is Aug. 4.