With Gov. Deval Patrick’s appointment of longtime Kennedy courtier Paul Kirk to Sen. Edward M. Kennedy’s seat in the U.S. Senate, there are now at least three close aides holding on to Senate seats while their states go through the formality of an election. The governor of Delaware appointed Joe Biden’s longtime friend and former chief of staff to fill the rest of his term in the Senate. Can you name him? It is generally thought that he is obligingly holding on to the seat until Biden’s son Beau gets back from National Guard service and is able to run to succeed his father. And in Florida, Gov. Charlie Crist named his former chief of staff to fill the seat of retiring Sen. Mel Martinez until the 2010 election in which Crist is running for the seat. There are more seat-fillers in the Senate than at the Oscars.

Of course, Kennedy himself took his seat when he attained the age of 30, after it was kept warm for him by family retainer Benjamin A. Smith III.

Meanwhile, as of 2005 there were 18 senators who gained office at least partly through their family ties – sons, daughters, wives, nephews of former senators, governors, presidents, and so on.

The Founders envisioned the Senate as an assembly of wise and accomplished men, chosen for their experience and judiciousness. Political campaigns that favor the handsome, the glib, the panderers, and the best fundraisers are bad enough. But a Senate full of legacies and seat-warmers is especially unfortunate.