Two days after proclaiming that the Democratic National Convention would be a 'contested convention,' Bernie Sanders today gave himself some wiggle room to drop out.

At an a.m. press conference, Sanders said he wouldn't 'speculate' about what comes next with his campaign until he knows the results of California and the rest of Tuesday's primaries.

'Let's assess where we are after tomorrow, before we make statements based on speculation,' Sanders said.

Asked what his plans were for the rest of the week, Sanders said he would travel to Los Angeles for a Santa Monica rally tomorrow night.

'We'll be taking a plane back to Burlington and certainly we'll be campaigning in D.C.,' he added, noting the stopover in his hometown, before talking to Democratic voters in Washington, who are the last in the country to vote.

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Bernie Sanders spoke to reporters in California this morning and said he would 'assess' the campaign after tomorrow's votes come in

The Vermont senator then spent his afternoon meeting potential voters in Oakland and then throughout downtown San Francisco

It was a marked difference in tone, from just two days before when, on Saturday in Los Angeles, Sanders said there was no way he was bowing out.

At that time he addressed the media and said to proclaim Hillary Clinton the nominee after she clears the hurdle of delegates needed to clinch the nomination – by using pledged delegates and superdelegates – 'simply is not accurate.'

For Clinton to get to the 'magic number' of delegates necessary to win the nomination, she would have to win two-thirds of the remaining delegates, he said Saturday.

'Frankly, unless I am very mistaken, that is not going to happen,' Sanders said.

It is true she has a '10-1' advantage in superdelegates but he was confident that the political winds could shift in the next six weeks before the July 25-28 convention in Philadelphia.

'We have come a very, long way, and steep climbs and challenges are not something that this campaign shies away from,' he said.

Today he still argued that 'revolution' is the best way to get political change, but didn't touch his Democratic opponent, instead jabbing at presumptive Republican nominee Donald Trump.

Sanders again called out Trump for his 'bigotry' and was incredulous that a candidate could get away with it in this year in time.

'That is really quite mind boggling that this is taking place in the year 2016,' Sanders said.

The Vermont senator maintained that he was the best candidate to defeat Trump in the general election.

Asked by one reporter in the audience if it was 'sexist' for Sanders not to drop out – preventing the first female major party candidate from being the nominee, the senator became briefly cantankerous.

'Is that a serious question?' he asked.

After trying to find his words for several seconds, he finally replied,

'So if Hillary Clinton runs for president, is your point that it is sexist for any man to oppose her?' he asked back.

'I don't think it is sexist,' he said.

Sanders was also asked what he would do if President Obama went ahead and endorsed Clinton before the Vermont senator had pulled out.

'Again,' Sanders began. 'We're speculating.'

'Tomorrow we have 475 pledged delegates coming up,' Sanders stated. 'And my job in the next 24 hours is to do everything that I can to win those delegates.'

Sanders said that after he got food in his belly, which he did during a brief stop at Aunt Mary's in Oakland, California, he planned to meet voters for the rest of the day, with his final rally in California along the water in San Francisco tonight, with the Golden Gate Bridge as his backdrop.

As Sanders walked through San Francisco's storied Chinatown section, shaking hands with reporters, spokesman Michael Briggs remained elusive about whether Obama and Sanders spoke, with NBC News reporting that the two had talked yesterday about the president's Clinton endorsement.

'I'm saying that he's spoken with the president on a number of occasions at the White House and on the telephone,' Briggs said. 'He doesn't discuss the nature of his private conversations.'

Briggs also dismissed that Sanders sounded like he was changing his tune on the race.

'I didn't see a shift,' the spokesman said.

'He changes his language from day to day. Some days he says this about Secretary Clinton some days he says that - some days he says other things,' he continued.

'You guys are looking for nuances that I don't see,' Briggs added.

Before signing off at the press conference, Sanders made a final point about his run.

'I think most people and most of you, and most of the punditry thought this campaign would not go very far,' he said.