They may not be running for president – at least, not this time around – but four of the most prominent voices in the Republican Party have some advice they’d like to dish out to the current field of GOP contenders.

(Scott Olson/GETTY IMAGES)

Some of their advice hits on familiar themes. Palin urges the contenders to read Chapter 3 of her book, “Going Rogue,” for ideas on how to achieve energy independence and take on what she terms “the left’s terrifyingly naive assault on American industry.”

“Given the concerns I have for some of the Republican field’s focus thus far, I must implore the candidates to do something that sounds self-promoting, but whatever,” Palin writes.

Cain, who suspended his candidacy earlier this month amid allegations of sexual harassment and a 13-year affair, tells the GOP field that “this year is the time to get bold” (specifically, it’s time to take up his “9-9-9” tax plan).

Barbour counsels Republicans to keep their sights trained on President Obama’s economic record. And Daniels calls on the GOP field to make a serious effort to tackle the country’s debt — and also once again makes an implicit call for a “truce” on social issues.

“With survival literally at stake, and broad consensus required to enable major changes, arguments about secondary issues should be muted,” Daniels writes.

Other pointers from the quartet of top Republicans — including Palin’s advice to “quit gripin’ and moanin’ about ‘inside baseball’ ” and Barbour’s call to “attack Obama’s policies and offer solutions instead of attacking primary opponents” – may prove somewhat trickier for the presidential field to follow with the hotly-contested caucuses just three days away.

You can find the full op-eds from Palin, Barbour, Daniels and Cain online here and in Sunday’s newspaper.