Question: Who did Humphrey lose the 1968 presidential race to?
About the article "Assassination of Robert F. Kennedy", section "1968 election".

Candidate passages:
King might have run for another term had the 1968 Presidential election not gotten in his way.
King was anavid President Lyndon B. Johnson supporter, and a 'hawk' on Vietnam.
So, when Senator Eugene McCarthy droppedinto New Hampshire, King didn't hold back on the attacks.
But the attacks didn't work.
President Johnson saidgood-bye to the 1968 Presidential Race, 'handed' his place to Vice President Hubert Humphrey, who in turn askedKing to run for the Senate.
King did, losing to Republican Norris Cotton. 
The 1968 United States presidential election in Pennsylvania took place on November 5, 1968 throughout all 50 states and D.C., which was part of the 1968 United States presidential election.
Voters chose 29 representatives, or electors to the Electoral College, who voted for President and Vice President.
Pennsylvania voted for the Democratic nominee, Vice President Hubert Humphrey, over the Republican nominee, former Vice President Richard Nixon.
Humphrey won Pennsylvania by a margin of 3.57%.
A third party candidate, former Alabama Governor George Wallace, played a significant role by winning 7.97% of the vote.
This marked the first election since 1948 that a presidential candidate won the national election without carrying Pennsylvania.
That did not happen again until 2000. 
The Robert F. Kennedy presidential campaign began on March 16, 1968.
Robert Francis Kennedy, a U.S.
Senator from New York who won a Senate seat in 1964, faced what was widely considered an unrealistic race against an incumbent, President Lyndon B. Johnson.
After Johnson's announcement on March 31 that he would not seek re-election, Kennedy still faced Johnson’s leading challenger, Eugene McCarthy, a U.S.
Senator from Minnesota, and Vice President Hubert Humphrey, who entered the race following Johnson’s withdrawal, for the Democratic Party’s presidential nomination.
Kennedy and McCarthy remained the main challengers to Humphrey and the policies of the Johnson administration.
Throughout the spring and summer, Kennedy campaigned in presidential primary elections, especially those in Indiana, Nebraska, Oregon, South Dakota, California, and Washington, D.C.
He had made progress in achieving Democratic support for the nomination until his assassination on June 5, 1968, in Los Angeles, California. 
In 1968 the Democratic Party was divided.
Senators Eugene McCarthy and Robert F. Kennedy had entered the campaign in March, challenging Johnson for the Democratic nomination.
Johnson, facing dissent within his party, had dropped out of the race on March 31.
Vice-President Hubert Humphrey then entered into the race, but did not compete in any primaries, compiling his delegates in caucus states that were controlled by party leaders.
After Kennedy's assassination on June 5, the Democratic Party's divisions grew.
At the moment of Kennedy's death the delegate count stood at Humphrey 561.5, Kennedy 393.5, McCarthy 258.
Kennedy's murder left his delegates uncommitted.
When it came to choosing a candidate, on one side stood supporters of Senator McCarthy, who ran a decidedly anti-war campaign and who was seen as the peace candidate.
On the other side was Vice President Humphrey, who was seen as the candidate who represented the Johnson point of view.
In the end, the Democratic Party nominated Humphrey.
Even though 80 percent of the primary voters had been for anti-war candidates, the delegates had defeated the peace plank by 1,567¾ to 1,041¼.
The perceived cause of this loss was the result of Mayor of Chicago Richard Daley, and President Johnson pulling strings behind the scenes.
Humphrey, even though he had not entered a single primary, had won the Democratic nomination, and went on to lose the election to the Republican Richard Nixon.
Source: Keating Holland, "All the Votes... Really," CNN 
A Vice-Presidential preference primary was also formerly held at the New Hampshire Primary.
New Hampshire State Senator Jack Barnes, who won the 2008 Republican contest, co-sponsored a bill in 2009 which would eliminate the Vice Presidential preference ballot.
The bill passed both houses of the state legislature and took effect in 2012.
The only time a non-incumbent won the Vice Presidential primary and then went on to be formally nominated by his or her party was in 2004, when Democratic U.S.
Senator John Edwards won as a write-in candidate.
Edwards, who was running for President at the time, did not actively solicit Vice Presidential votes.
In 1968, the sitting Vice President Hubert Humphrey won the Democratic Vice Presidential primary, and then later won the Presidential nomination after the sitting President Lyndon B. Johnson dropped out of the race.
The following candidates received the greatest number of votes at each election.
"*" - write-in candidateSources: New Hampshire Department of State, New Hampshire Political Library