Sen. Jeanne Shaheen, the Democratic incumbent, is not seeking re-election, leaving the seat open. Rep. Chris Pappas has emerged as the Democratic front-runner, while John E. Sununu has the benefit of ...

The share of support for each candidate in the 15 most recent polls. About this data Note: The candidates shown are those who have gained the most support in recent polls. Some polls didn’t include ...

Senator Susan Collins, the last Republican in New England’s congressional delegation, will test whether a G.O.P. moderate can hold ground in Maine. Election date: Nov. 3 Ms. Collins will face Troy ...

The battle for control of Congress is on. Republicans hope to maintain and expand their narrow majorities in the fall for the second half of President Donald Trump’s term, while Democrats will aim to ...