Consumer advocate Ralph Nader says despite anger within the liberal base of the Democratic Party, President Obama will win reelection easily next year.

In an op-ed the four-time presidential candidate penned for Bloomberg on Wednesday, Nader slammed Obama's approach to economic and foreign policy, but argued that the weakness of the GOP field makes him a shoe-in for a second term.

The GOP field consists largely of candidates leading with "harsh ideological positions," Nader wrote, dismissing Rep. Michele Bachmann (R-Minn.), former Speaker Newt Gingrich (R-Ga.) and real estate mogul Donald Trump as lightweights who "might as well be on the Democratic National Committee payroll."

Obama's greatest 2012 asset, argued Nader, may be that he's "neutered much of the big corporate lobby’s zeal to defeat him."

As for a potential primary Democratic challenge, Nader said while he would welcome it, he lamented the fact that no one appears willing to take up that mantle.  

"A discussion of Obama’s forgotten campaign promises and record would have public support among Democrats," Nader wrote. "Even so, the liberal base has nowhere to go to send a message about war, free-trade agreements, raising the minimum wage or union membership."