It remains to be seen what's next for O'Rourke, who came within 3 percentage points of Republican Sen. Ted Cruz in the closest Senate race in Texas in 40 years. The El Paso congressman, who shattered fundraising records in a Senate campaign, raising more than $70 million, has insisted he's not interested in another office for now. But that has done little to dampen speculation that he could run again in 2020.