But the gambit produced no boost for Swalwell, who scrapped a planned trip to New Hampshire last week.
Like a number of others now in the race for the Democratic nomination, Swalwell had been making the rounds on TV, going to Iowa, and New Hampshire - but had little to show for it in terms of momentum or notice.
"This is about 3 months overdue," said GOP pollster Frank Luntz.
"Swalwell's Presidential campaign lasted exactly three months," noted Rob Pyers, a California political researcher.
The Democratic race remains filled with people just like Swalwell, who harbor dreams of winning their party's nomination, but are little more than an asterisk in the polls, less than one percent in the polling averages.
It is not unusual for candidates to give up before the first primary and caucus states even arrive.
The next Democratic debate is set for July 30-31 in Detroit, to be hosted by CNN.