President Barack Obama ripped the policies of Wisconsin Gov. Scott Walker and poked fun at the large crop of Republican presidential candidates on Thursday, injecting himself into the race to find his successor in 2016.

The Democratic president, who had largely avoided weighing in on the 2016 campaign, basked in a recent set of victories over his health care law, gay marriage and trade, and launched broadsides at the growing number of Republicans entering the race to succeed him in office.

"We've got some healthy competition in the Democratic Party, but I've lost count of how many Republicans are running for this job," Obama quipped in a campaign-style event.