1. Senate election in Texas
Will Texas' Trump-backed, scandal-plagued attorney general Ken Paxton become the new senator, or will controversial Democratic pastor James Talarico win? Texas has been solidly Republican for decades but is now leaning more toward purple, a reference to states where Republicans and Democrats are roughly evenly matched.
2. Michigan Senate election
Can left-wing Democrat Abdul El-Sayed become the new senator for the swing state of Michigan? Or will his Republican opponent, former congressman and FBI agent Mike Rogers, who in recent weeks has urged Trump to end the war in Iran, take the seat?
3. Senate election in Maine
Will centrist Republican veteran Susan Collins, who has been Maine's senator since 1997, be unseated by state politician Troy Jackson, who in turn replaced oyster farmer Graham Platner, who has been accused of rape?
4. Senate election in North Carolina
Will Democrat and former governor Roy Cooper clinch a Senate seat for North Carolina, whose residents have voted for Donald Trump as president three times, or will Republican veteran Michael Whatley prevail?
5. Florida gubernatorial election
Will Trump loyalist and former House representative Byron Donalds become Florida's first Black governor? Donalds has a significant lead over Democrat David Jolly in increasingly conservative Florida, which is also the president's home state.
6. Senate election in Georgia
Will Democrat Jon Ossoff retain his Senate seat, despite his home state of Georgia voting for Trump in two out of three presidential elections? He is being challenged by Republican House representative Mike Collins.
