Eliana Johnson reports for National Review Online about the recent buzz surrounding Florida Sen. Marco Rubio.

Jeb Bush’s announcement in December launched both a fundraising juggernaut and an aggressive hiring spree, and Scott Walker’s speech in Iowa the following month lifted Walker to the top of national polls. But a little more than a month later, says the operative, “The Jeb boom is over and people are having second thoughts about Walker.”

The beneficiary in terms of buzz is Marco Rubio, who now has many of the party’s top donors looking at him in a way they weren’t even a month ago. Though Rubio hasn’t made as much noise as his competitors as the 2016 campaign has gotten underway in earnest, his knowledgeable presentations and obvious political talent are nonetheless turning heads or, at least, enough of them. Rubio hasn’t made a big splash, neither building a “shock and awe” campaign like Bush nor delivering a marquee speech like Walker (who afterward seemed almost to be caught off guard by his rapid ascent). Instead, Rubio appears to be gambling on the idea that, in what is sure to be a long primary with a crowded field, a slow-and-steady approach will prevail.

The buzz about Rubio comes on the heels of a successful but nonetheless low-profile book tour that took him through the early-primary states of Iowa, South Carolina, Nevada, and New Hampshire, and as the frenetic motion around Bush and Walker has begun to subside.