Clinton woos blue-collar voters

Democratic presidential frontrunner Hillary Clinton campaigned across Kentucky on the eve of the state's Tuesday primary, desperate to improve her standing among working-class white men and painting sharp contrasts with her likely election adversary Donald Trump.

Clinton's rival Bernie Sanders is gunning for victory in the Bluegrass State, building on his win last week in neighbouring West Virginia as he battles to keep his long-shot nomination bid alive.

The two states are linked to coal, as is much of Appalachia, the largely white, long-struggling eastern US region where many feel they have been given the cold shoulder in the lukewarm recovery from the 2007-2008 financial crisis.

Also on Tuesday the northwest state of Oregon holds its Democratic and Republican primaries, where limited polling has indicated Clinton is ahead. Sanders, however, leads in Kentucky.

The state has been treated by Clinton as an opportunity to appeal to a demographic that has consistently snubbed her: working-class white men.

No Democratic presidential candidate has won Kentucky since 1980 except Bill Clinton.

On Sunday the former first lady appeared to indicate that her husband would play a role in her administration if she were elected, promising to put him "in charge of revitalizing the economy."

Asked during a stop Monday at a diner in Paducah, a city in southwestern Kentucky, whether Bill would be part of her cabinet, she shook her head and said "No" - but she reasserted that he would be her ally in office.

"I want to help bring back the kind of economy that worked for everybody in the 1990s," Clinton told the crowd.

"I've already told my husband that if I'm so fortunate enough to be president and he will be the first gentleman, I'll expect him to go to work... to get incomes rising."

'Risky and dangerous'

The Clintons have struggled to contain the damage from comments Hillary made in March, when she said she expected to "put a lot of coal companies and coal miners out of business."

She made the comment during a speech on renewable energies, but the soundbite stung many in Appalachia.

In Fort Mitchell at the weekend she emphasized her determination to help coal country, saying: "We can't and we must not walk away from them."

Clinton made three stops in Kentucky on Sunday, and another four Monday.

"We've got to turn a lot of people out," she told diners in Paducah. "I'll tell you this, I'm not going to give up on Kentucky in November!"

Clinton shook hands, took selfies, offered hugs -- and even chatted with Trump supporters who vowed never to vote for her.

With the Democratic nomination in sight, Clinton is repositioning herself for a bruising general election campaign battle against Trump, the presumptive Republican nominee.

At a later rally in Hopkinsville, Kentucky's secretary of state and close Clinton friend Alison Lundergan Grimes made the succinct case for a steady hand over Trump's unpredictability and the Republican Party's reluctance to coalesce around their presumptive nominee.

"They have dysfunction. We have a candidate with a plan," Grimes said.

Clinton used the rally to pummel the "risky and dangerous" Trump, suggesting he is unqualified to handle tough foreign policy decisions.