"<b>RICK PERRY</b><br /><i>Announcement: Jan. 19, 2012</i><br /><br/>Under pressure from some conservatives to throw his dwindling support to Newt Gingrich in an effort to halt the Mitt Romney train, the Texas governor did just that two days before the South Carolina primary. Declaring ""no viable path forward"" for his own campaign, Perry said:  ""I know when it's time to make a strategic retreat."""