Republicans see it as a firewall against the liberal policies and nominees of Hillary Clinton if she wins the White House and Democrats see it as a critical defense against the uncertain actions of Trump if he wins.
Trump is expected to speak in Eugene on Friday night, according to sources close to his campaign.
The day after Ted Cruz ended his campaign, Ohio Governor John Kasich has joined the Texas Senator on the sidelines.
Democrats are counting on blowback against Mr. Trump to help them in places like New Hampshire, where Republican Sen.
The billionaire businessman vowed to unite the splintered GOP, even as he was bitingly dismissive of members who have been critical of his campaign.
"The spirit, the essence of America lies in the hearts and souls of us", he said.
"I think Elizabeth Warren's really smart", she said.
Trump's challenge in uniting Republicans was abundantly clear Wednesday. Late last night, Kasich campaign staffers responded to GOP chair Reince Priebus' statement that Trump is the party's presumptive nominee.
For weeks now, Clinton's advisers have viewed voter anxiety about a Trump presidency as one of the best ways to bring Bernie Sanders' supporters to her side, and his grip on the nomination makes those fears all the more potent, they believe.
Having chased his final rivals from the Republican presidential primary after Tuesday's big win in Indiana, Donald Trump no longer needs triumphant victories in OR and Washington this month to seal the deal. Ted Cruz to drop out of the race. "This, to me, is a classic case of a blustering, bullying guy who has knocked out of the way all the Republicans because they were just dumbfounded". Instead, he offered an emotional recount of his exchanges with voters on and renewed his call for Americans to spend more time helping one another. A first-time candidate, he eschewed traditional fundraising and relied more on his own star power than television advertising to draw attention. The price tag for a general election is likely around $1 billion. "I love debt", Trump said.
Cruz's exit came as a surprise, and many Republicans who had denounced Trump were grappling with what to do next.
"Trump has a lot of work to do", said Mackowiak.
Vander Plaats and a handful of other Republicans are clinging to the hope that an alternative option might yet emerge. Ben Sasse and former Oklahoma Sen. "And while that's true, that's not the real danger here", Jindal said.
"Nobody has ever done more with less in the history of politics", he said.
Shays said that while Kasich's decision to drop out was now unavoidable, he and others are still bitterly disappointed - and nervous about Trump as the GOP nominee. In a shot at his critics, Trump added: "Those people can go away and maybe come back in eight years after we served two terms".
"There is definitely a margin there for the Clinton campaign to manipulate", said Rob Stutzman, a Republican consultant who has been leading a California-focused effort to stop Trump from winning the nomination.
"He is a loose cannon and loose cannons tend to misfire", Clinton said Wednesday.
Massachusetts Republican Gov. Charlie Baker told reporters in Boston that he won't vote for Trump, though he added that he "sincerely doubts" that he would vote for Democratic presidential front-runner Hillary Clinton. But his general election hurdles could extend to white voters as well, a problem masked by his dominance in the GOP electorate.
"I'm not looking for myself, I'm looking out for the party, so the party can compete in Senate races and House races. With the Republican National Convention in Cleveland, there will be no rock that Portman can hide under to avoid his Party's toxic nominee", said the statement from David Bergstein. One, New Hampshire Sen.
While the New York City developer will get the backing of the Republican National Committee, he still needs to win over party figures who swore never to board the Trump train. He also said he was starting to vet potential running mates. Ohio Governor John Kasich, the third Republican in the race, had the support of 16 percent.