"It's the most important thing that we do," says Guy Cecil, executive director of the Democratic Senatorial Campaign Committee. "Without a good candidate, it makes your job a helluva lot harder."

Wives are wooed. Inspiring role models are found. Frequent-flier miles are accrued. It is not a job for the impatient. Experienced recruiters say it takes at least a couple of months to get most candidates off the fence and into a race. For some, it takes years. Congress can be a tough sell these days, with its popularity rivaling colonoscopies and root canals. Cecil says it took him seven to nine months and an estimated 100 conversations to persuade Richard Carmona to run in Arizona in 2012 -- and his bid wasn't sealed until he got a phone call from the president. (And, as a reminder that there are no guarantees in politics, Carmona lost.)

Call, convince, cajole, reassure. Repeat. It is a persistence hunt.

Rob Collins, the top strategist for 2014 at the National Republican Senatorial Committee, says he is modeling his efforts after Nick Saban, the University of Alabama football coach and winner of three of the past four national championships. "Nick Saban is a genius recruiter because he's constantly talking to his recruits. He's in their face. He lets them know that they're wanted. He lets them know they fit into the team and they they'll have a role that they would want," Collins says. "We're kind of taking that approach."

While college football is the most common recruiting analogy, dating is another. One senior GOP strategist active in the process said finding the right candidate is like identifying a potential mate. You don't want the ones who don't want you, but you don't want the ones who will go home with you on the first date either. And be forewarned: Nobody ever wants to know he or she is anyone's second choice.

It makes for a delicate task. While most politicians enjoy the ego-stroking that a courtship entails, many -- especially Republicans, these days -- fear being tagged as the pick of party bosses. So, wooing is often done on the hush-hush. Rob Jesmer, who had Collins's job in 2010 and 2012, said he would rendezvous with prospects in remote locales, like "a diner far away from town," safe from prying eyes and ears. "So people would not see."

The process is less about unearthing the next Marco Rubio or Barack Obama, although that would be welcomed, and more about finding the occasional Heidi Heitkamp, the new Democratic senator from North Dakota who won last year even as voters in her state thumped Obama by nearly 20 points. Heitkamp is the kind of political unicorn recruiters dream of catching: the one Republican who can win in New York City, say, or the perfect Democrat to carry Kentucky -- a candidate so compelling that he or she upends a district's or state's natural political geography. "If we would have had anybody else, I don't think we would have won," Cecil says of Heitkamp.