Washington (CNN) - Former House Speaker Newt Gingrich will announce his presidential campaign on Wednesday, his spokesman Rick Tyler confirmed to CNN. Gingrich, who has been exploring a presidential bid for several months, "will announce on Twitter and Facebook."
His first formal speech as a presidential candidate will be Friday at the Georgia Republican Convention.
Gingrich has been traveling to some of the key early voting states as he has tested the waters trying to appeal to various constituencies of the party.
He has been forced to delay some of his self-imposed deadlines for making decisions about a campaign as he unwinds himself from several of his businesses.
He is in the top tier of prospective candidates but ranks below some of the other contenders. In the latest CNN/Opinion Research Poll taken between April 29 and May 1, 10 percent of Republicans picked Gingrich as their choice for the nomination in 2012, the same percentage as Texas Rep. Ron Paul. Former Alaska Gov. Sarah Palin, former Massachusetts Gov. Mitt Romney, real estate mogul Donald Trump and former Arkansas Gov. Mike Huckabee ranked higher than Gingrich, although such surveys at this stage usually mostly gauge name recognition.