Three key takeaways from early voting in midterm elections
Voting is particularly high in states with tight Senate races that could determine which party controls the chamber

TL;DR
- Record numbers of US citizens are voting early for the midterm elections.
- Early voting turnout is especially high in states with competitive Senate races.
- Democrats have cast a higher percentage of early votes than Republicans and those with no party affiliation.
- Analysts suggest the high early turnout among Democrats could be a 'referendum on Trump'.
- Polls show a slight majority of voters would support Democratic congressional candidates over Republican ones.
- Some Republican voters are reportedly unenthusiastic due to economic conditions.