The former vice president is part of a group of Republicans who have visited early nominating states as they weigh a challenge to their party’s most dominant force.
House Democrats have been pressing the president to come up with a bumper-sticker-worthy slogan. The White House says it’s sharpening its message.
Senator Mitch McConnell had been trying to recruit Gov. Doug Ducey of Arizona to run, but former President Donald J. Trump had warned him against it.
The 87-year-old Republican has told people that he will step down at the end of the year, four years before his term is up. His seat is likely to stay in G.O.P. hands.
Senator Mitch McConnell is working furiously to bring allies to Washington who will buck Donald J. Trump. It’s not going according to plan.
The three-term South Dakotan had considered retiring because of family concerns and the continuing grip of former President Donald J. Trump on the Republican Party.
Mr. Reid, a Democrat from Nevada, displayed his pugilistic instincts as he steered an economic stimulus package and the Affordable Care Act to passage.
Mr. Thune, the No. 2 Republican in the Senate, is considering giving up his South Dakota seat because of both family concerns and Donald Trump’s enduring hold on the G.O.P.
Focus groups with Virginia voters led to a bluntly worded memo on what Democrats need to do going into the midterms.
Republicans hope to hit on a recipe for renewal, while Democrats worry that a loss could force them to defend seats in blue states next year.