Vermont Sen. Bernie Sanders turned rallies at the University of Nevada, Reno and UNLV into impromptu marches to the polls on Tuesday as candidates campaigned around the state on the final day of early voting in the Democratic presidential caucuses.

As the dust settles from Iowa, another caucus looms on the horizon.

The topic to be explored: Where we are now and what might happen next.

Six Democratic candidates are gathering Wednesday in Nevada for the ninth debate in the race to be the party's nominee to oppose U.S. President Donald Trump in November's general election.

Democratic presidential candidates Bernie Sanders and Mayor Pete Buttigieg took the campaign trail to UNLV Tuesday. However, both men had different ways of spreading their message days ahead of the Nevada Caucus.

The stakes are rising rapidly for the six Democratic presidential candidates set to debate at the Paris Theater in Las Vegas Wednesday night, as a new poll shows Vermont Sen. Bernie Sanders’ lead widening, one-time top candidates tumbling, and former New York Mayor Mike Bloomberg mounting a serious challenge for the nomination.

As the Doobie Brothers classic “Takin' It to the Streets” blared over speakers, presidential candidate Sen. Bernie Sanders marched a contingent of Las Vegas voters to the nearest early voting site on Tuesday.

Bernie Sanders speaks to students at UNLV.

Humans are one of the most successful species on the planet: We live on frozen continents and arid deserts, create tools that help us survive and even push the boundaries of our biology. Our ingenuity and adaptability serve as our species' superpowers, but the origins of that power may be found in unexpected places — like the armpit sweat of our closest living relatives.