A year after President Donald Trump's shocking victory, the state and local elections Tuesday will test whether Democrats can finally deliver big wins to their base -- or Republicans have figured out how to run in the Trump era.

A year after President Donald Trump's shocking victory, the state and local elections Tuesday will test whether Democrats can finally deliver big wins to their base -- or Republicans have figured out how to run in the Trump era.

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Democrats Sweep in Virginia, New Jersey

(CNN) -- Democrats have won key races in Virginia and New Jersey, CNN projects, their first major wins during the tenure of President Donald Trump and a boost heading into the 2018 midterms, when control of US House and Senate will be up for grabs.