That newfound enthusiasm, which Republicans strategists say they are seeing around the country, could bolster Republicans in close Senate battles in Florida, North Dakota, Missouri, Montana, Indiana, Tennessee, Texas and West Virginia - all states carried by Trump in 2016.
"There is no question the Kavanaugh fight has provided a burst of energy to Republican voters at a critical time," said Brian Walsh, a Republican strategist and former staffer for the party's Senate campaign committee.
Democrats contend that the Kavanaugh nomination and sexual misconduct allegations have motivated women and independents in contentious House races, many of which are in suburban and swing districts where Trump already was less popular.