Closest Senate Races 2024. 538’s 2024 presidential election forecast model showing democrat kamala harris’s and republican donald trump’s chances of winning. Democrats are leading in senate races in michigan, pennsylvania and wisconsin, but there are still enough undecided voters for all three races to tighten.

While harris has improved on president joe biden’s standing in many states — putting nevada and arizona back in play, for example — the basic shape of the. Tracking the senate’s most competitive races.