海角大神

Call it Jeb-mentum vs. Mitt-mania: Bush versus Romney for the 2016 Republican nomination for the presidency of the United States.

This isn鈥檛 a matchup that might be. It鈥檚 already happening (probably). So get psyched for it now.

Here鈥檚 our construct for this: Jeb Bush is already running. That鈥檚 the import of his recent announcements that he鈥檚 set up new 鈥淩ight to Rise鈥� money-collecting committees, and is exploring a presidential bid. He鈥檚 in the same position as Hillary Rodham Clinton: At this point, the default decision is 鈥済o." It would be much more of a surprise if he (or she) decides to stop the train and get off before it鈥檚 time to make an official candidacy announcement.

Mitt Romney, meanwhile, seems to want everybody to know that his campaign locomotive is getting polished up too, even it if hasn鈥檛 yet actually left the station.

That鈥檚 the bottom line from last week鈥檚 reports that he told a told a private meeting of former donors that he鈥檚 considering a third presidential run.

This isn鈥檛 as clear an indication of intent, of course. It鈥檚 possible the sources who鈥檝e leaked this statement are diehard supporters who really want Romney to try again, or ex-Romney campaign officials who are angling for another job.

But then again, why was Romney holding a meeting of former campaign donors in the first place? The time for passing out commemorative T-shirts from the 2012 race is past. The most likely explanation is that he wants to indicate he might need their money later 鈥� so they shouldn鈥檛 be sending it to the nascent Bush campaign just yet.

Look, both men know that the time to move is now. Gov. Chris Christie (R) of New Jersey looks like he鈥檚 slipping. Sens. Rand Paul of Kentucky and Ted Cruz of Texas have policy or personality flaws that may keep them from actually winning the nomination. Other contenders for slot of GOP establishment choice, such as Gov. Scott Walker of Wisconsin, have yet to build much name recognition amongst the general public.

Yet the campaign has already begun, even though voting is a year off. We鈥檙e in what political scientists call the 鈥渋nvisible primary鈥� portion of the long presidential march. Candidates ask state chairman for support, cadge donations from check bundlers, hire staff, and draw up strategies.

Candidates who corral the majority of potential backing in the invisible primary almost never lose, , in an interesting backgrounder in The Upshot, the data analysis and background section of The New York Times.

Many otherwise-plausible candidates who don鈥檛 get much invisible primary support decide not to run. Others do, but never gain momentum. Think Tim Pawlenty, the Minnesota governor who sputtered in the 2012 GOP race.

鈥淭he invisible primary is well underway, and it will confer the resources, attention and credibility necessary to win a presidential nomination,鈥� writes Cohn.