The Wall Street Journal's "Ahead of the Tape" column looks at (subscription required) one of the age-old market-timing indicators: the election year.

Conventional wisdom holds that election years are a good time to buy stocks because incumbents hoping to hold on to power, for themselves or their party's successor, will try to win voters' favor with fun things like tax cuts and spending to give the economy an upward jolt.

Conversely, politicians usually save things like tax hikes for their first two years in office, hoping we'll forget about it by the time election year rolls around.

The Journal argues that the subprime meltdown and general housing turmoil could make the election indicator less reliable this year. "Investors should also keep in mind the one time in the last half century the presidential cycle didn't work: 2000, when the dot-com stock bubble imploded. No amount of fiscal stimulus could stave off that bear market. It remains to be seen if Washington's pump-priming machine will work this time around."

Markets are too complex to use any one indicator -- no matter how impressive its past performance -- to try to jump in and out of the market. It's been said many times before, but most investors should just buy and hold and pay no attention to the election year indicator, the Super Bowl indicator, or anything else.