“…If these shifts occur, we have reason to believe legislators will respond to them (Kousser and Masket, 2007). We generally have little support for the claim that presidents may directly and broadly lead public opinion (Page, Shapiro and Dempsey, 1987;Edwards III, 2006;Edwards, 2007Edwards, , 2009Edwards III, 2012), though temporary, issue specific, non-presidential, and limited opinion leadership effects have been found (Wood, 2007;Bartels and Mutz, 2009;Rottinghaus, 2009;Cohen, 2010;Tedin and Rodgers, 2011). The limited scope of presidential opinion leadership effects found thus far suggest this technique of grassroots mass persuasion (called Neighbor-to-Neighbor by OFA) is potentially very important if effective (Melber, 2010) 4 .…”