Meaning?

Hi, What is the meaning of your last speech and won't hear the news in the following text?

"We're asking you to withdraw and endorse Fisk"

Coley gulped the rum without taking his eyes off Marlin.

"Keep talking, "he said.

"There is not much to say. You're a long shot, to put it mildly. You've done a good job of.………., but it's time to bail out and help elect Fisk. "

"What if I don't like Fisk?"

"I'm sure he doesn't like you. It's immaterial. The party's over. You've had your jollies, gotten some headlines, met lots of interesting folks along the way, but you've made your last speech. "

"The ballot have been printed . My name is on them."

"That means that a handful of your fans won't hear the news. Big deal. "

Thanks