Obama won Iowa 's caucuses in 2008 ; now he 's drawing some frustration from his base . Says one dismayed voter : ` ` I ' m not going to vote at all this week . '' They 're just playin ' with people . Iowa ##ns are mounting an aggressive effort to energize voters for Tuesday night . Republican voters continue to pummel the Democrats on the economy , health care .
Obama won Iowa 's caucuses in 2008 ; now he 's drawing some frustration from his base . Says one dismayed voter : ` ` I ' m not going to vote at all this week . '' Iowa ##ns are mounting an aggressive effort to energize voters for Tuesday night . Republican voters continue to pummel the Democrats on the economy , health care .