A slice of voters backing former President Donald Trump are also planning to support Democratic Senate candidates.Scott Olson/Getty ImagesDonald Trump hopes to push several swing-state GOP Senate candidates over the finish line.But some of his supporters say they plan to back Democrats in those races instead.These split-ticket voters could end up having a major impact on the country.In recent presidential election cycles, the level of ticket-splitting — where people vote candidates from different parties on their ballot — has plummeted.Some 20 years ago, then-Democratic presidential nominee John Kerry lost GOP-leaning states like Arkansas and North Dakota even as the incumbent Democratic senators in those states — Blanche Lincoln and Byron Dorgan — coasted to victory.This sort of ticket-splitting was generally not seen as atypical.But by 2020, things were different.