Eric Holt was another face in a sea of red.In the midst of teacher strikes in Clark County, educators clad in red T-shirts flooded Esther Short Park on an afternoon in early September to rally for their demands. Wearing a crisp dress shirt, red tie and pair of running shoes, Holt strode into the crowd.Holt had risen at 3 a.m. at the homestead in Hockinson that he shares with his wife and three boys to get to his job as a safety and operations manager at a mining company in Portland. After getting home from work, Holt had a few minutes with his wife before it was off to meetings with county officials as well as elected leaders and a labor group as part of his run for Clark County Council chair.“Relationships are everything,” said Holt. “With everybody. With the people you run against, with the groups that support you, with the groups that oppose you.”Amid the speeches and cheers at the rally, Holt could pick out familiar faces of supporters and people he’d worked with. Holt once thought he’d never do anything like run for office. But after moving to Clark County in 2010 and getting involved in local Democratic politics, Holt, 45, has steadily won over much of the party’s establishment in his run for chair.In the August primary, Holt went toe-to-toe with two seasoned politicians vying for council chair and emerged in second place with 24 percent of the vote. In the November general election, Holt will square off with Republican County Councilor Eileen Quiring, who received 38 percent of the vote. The two candidates offer notably different visions of economic development, planning, taxation and other issues.