Let us know when Obama reaches the lows of Ford, Reagan, W. Bush, Clinton,Carter or H.W. Bush on RCP The lowest week of Gallup polling thus far for Obama was 40 percent, occurring in August and October of 2011. Arguably, he is due for a dip, given that each of his modern predecessors has dropped into the 30s or below. Presidents Ford, Reagan, and Clinton each hit a low point of 37 percent. President George W. Bushâs low ebb was 31 percent; Nixonâs was 27 percent; Carterâs was 28 percent; and George H.W. Bushâs was 29 percent.