Despite clues that Democrats are poised to make big gains that may give them at least split control of Congress and increase their numbers at the Statehouse, not everyone is bracing for a “blue wave” this fall.Democratic overperformance in special elections, the numbers and enthusiasm seen in the Women’s March and the growth of “resistance” organizations such as Indivisible have many Democrats believing it’s their turn after Republican wave elections in 2010 and 2014.Iowa Democratic U.S.