Washington (CNN) - Despite finding himself on top of several recent presidential polls, Mike Huckabee continues to appear tepid about mounting a second bid for the White House.
In an interview on ABC's Good Morning America Monday, Huckabee said the process of running is "grueling" and cautioned that President Obama will be extremely difficult for any Republican to unseat.
"It is a very grueling process," said Huckabee, who ran in 2008. "I think the fact that I've done it before gives me both a sense of gravity toward the process, but it also gives me an understanding that it's not always smart to be the first guy out of the corral and out there in the arena riding around on your pony by yourself."
Huckabee added the odds will likely be stacked high against whichever Republican wins the presidential nomination.
"You don't beat presidents easily," he said. "And this idea that he's just an absolute one-term and easy to beat - this race is going to be like climbing a ladder, pointing toward you, because Barack Obama is going to start this race with a billion dollars, he's going to have no primary opponent."
"The Republicans are going to have a crowded field, all elbowing their way under the basket for the layup, and it's not going to be a layup," he continued. "It's going to be a tough shot? So, I am thinking very carefully."
Huckabee repeated the timetable for a decision he has given in previous interviews, saying he will make a decision by the summer. Though that seems late by modern standard, the former Arkansas governor noted Bill Clinton didn't announce he was running for president until three months before the first round of caucuses and primaries.