dr. joe harmon teaching civics in northwestern pennsylvania. >> franklin delano roosevelt, a major historichen his 100 days hit, we call it great -- the great depression. >> reporter: the lesson plan, the importance of a president's first 100 days. >> when he was running for president. "imagine what we can accomplish in the first 100 days of a trump administration." >> reporter: trump's words have special resonance here. this is one of the most hotly contested states where he won by just over 1%. and where shortly before the election, he signed a contract laying out his promises. >> on november 8th, americans will be voting for this 100-day plan to restore prosperity to our country. >> reporter: so now with day 100 fast approaching we're hitting the road in the keystone state. >> we have arrived in bucks county which is a battleground county within the battleground state. it's just outside of philadelphia. there are parts of this county that are quite affluent. and then huge chunks of it which are predominantly working class. >> reporter: we've come to mom's restaurant in charming downtown