DES MOINES, Iowa — Rick Perry, on his first day of extended Iowa campaigning, foreshadowed his coming assault Monday against Mitt Romney and swiped back at the former Massachusetts governor and venture capitalist’s suggestion that others in the GOP race don’t understand the economy.

In back-to-back answers, Perry nodded at the difference between his economic record as Texas governor and Romney’s in Massachusetts and then drew a cultural contrast between his background as an Air Force pilot and family farmer and his opponent’s high finance pedigree.