TIFFIN — Mississippi Gov. Haley Barbour isn’t quite ready to announce whether or not he will seek the Republican nomination for president in 2012. But, if he does, Iowans can expect to hear more of what he describes as “plain-spoken common sense and truth-telling.” Barbour told a group of Johnson County Republicans gathered for a spaghetti supper at Clear Creek Amana High School that he expects to make his decision regarding the 2012 presidential process by the end of April, and asked those who have not committed to “keep your power dry” so that he could have a chance to compete for their support