A Newt win here could knock the bottom out of the Romney campaign, removing the core arguments of inevitability and electability.
Old English botm, bodan "ground, soil, foundation, lowest part," from Proto-Germanic *buthm- (cf. Old Frisian boden "soil," Old Norse botn, Dutch bodem, Old High German bodam, German Boden "ground, earth, soil"), from PIE root *bhu(n)d(h)- (cf. Sanskrit budhnah, Avestan buna- "bottom," Greek pythmen "foundation," Latin fundus "bottom, piece of land, farm," Old Irish bond "sole of the foot"). Meaning "posterior of a person" is from 1794. Bottom dollar "the last dollar one has" is from 1882. Bottom-feeder, originally of fishes, is from 1866.
1540s, "to put a bottom on," from bottom (n.). Meaning "to reach the bottom of" is from 1808 (earlier figuratively, 1785). Related: Bottomed; bottoming.
To get as low or bad as possible; reach nadir: If [Watergate] ever bottoms out, we might be all right (1970s+)
The buttocks; ass (1790s+)