A choice quote from Sen. Roland Burris’ campaign manager Delmarie Cobb, via a Trib blog:

“As you know, there have been many marquee names thrown out for this seat and so far they have all fizzled,” Cobb said. “With [Burris] as the incumbent, it seems the Democratic Party would do well to rally around the person who has the seat and keep the seat rather than mine for a candidate.”

What was that? Some marquee potential candidates “fizzled”?

From later on the same day, via the Sun-Times

Sneed has learned U.S. Sen. Roland Burris has decided NOT to seek election to the seat he fought the government to keep [...]

The decision by Burris was based on his inability to raise campaign funds [...]

Seems to me that is the definition of “fizzled”.