The fate of these heated midterm races won't officially be decided until the last minute -- but what do YOU think is going to happen?
msnbc.com users predict the midterms:
LATEST: Hillary Clinton slams Republican in Iowa Senate race
WATCH: GOP incumbent leading Dem in key race
WATCH: Hagan and Sheen could save Democrats from sweep
WATCH: Florida Republicans lead early voting
WATCH: Dems, GOP scramble ahead of election
WATCH: Alaska Senate race upends midterm math
RELATED: GOPer uses image of Foley execution in ad
WATCH: Pushing Texas voters to the polls
LATEST: McConnell campaign event proves sleepy, underwhelming
WATCH: New hope in New Hampshire
WATCH: Will 2014 be the year of third-party spoilers?
DECISION 2014: Live results, once the polls actually close on Nov. 4.