GREG ALLEN, BYLINE: I'm Greg Allen in Sioux City.
At every stop in Iowa, former House speaker Newt Gingrich touts his experience. He calls himself a supply-side conservative who worked with Ronald Reagan in the '80s, and again as House speaker in the '90s, to revive the economy.
But he's not averse to a good photo op.
(SOUNDBITE OF A CROWD)
ERIKA JENSEN: OK. Oh, you got a little drips.
NEWT GINGRICH: I'm still dripping.