Barack Obama 's call for a tax cut for middle class changed dialogue on economy . Obama and Romney have been hits and misses when switching political messages . ` A president can do that , for example , because that 's the bully pulpit . ... Political experts say offering substance over style always best when switching messages .
Barack Obama 's call for a tax cut for middle class changed dialogue on economy . Obama and Romney have been hits and misses when switching political messages . Political experts say offering substance over style always best when switching messages .