The ABC election theme for the 2018 midterms (and beyond) takes advantage of a full orchestra, electronics, and massive percussion section to convey a renewed sense of importance and urgency. Trumpet fanfares, snare drums, and soaring string melodies more in tune with an olympic event, are replaced with a more serious drive and balance the line between urgency and optimism. This theme was also used for the 2020 and 2022 elections.
“Vote 2018” Theme

Very dramatic. This brings fond memories of bunkering up in my college dorm room with a bowl of popcorn watching US election coverage from abroad.
Interestingly, this theme borrows some notes from the 2004-2008 ABC News election theme.