NASHUA, N.H. — Democrats have a weak bench. So says Sen. Marco Rubio (R-Fla.).

"Ask yourself this: Who is the up-and-coming, talented 45/50-year-old Democrat, nationally? Who is it?" Rubio asked at a Monday town hall here at a defense and security company.

Silence.

"I'll give you a few minutes," he added. The audience laughed. "They don't have anyone," he said.

Rubio praised the Republican presidential field, calling it "diverse and talented." Democrats are down to a two-candidate race because they don't have any rising stars, he argued.

Rubio singled out Sen. Kelly Ayotte (N.H.), South Carolina Gov. Nikki Haley and New Mexico Gov. Susana Martinez as examples of rising Republican stars.

But Rubio never fully responded to the question that triggered his remarks, which was: Who would be his leadership dream team?

"I think it's presumptuous to say," said Rubio.