Who’s for whom in Nevada?

In an early caucus state, endorsements from local officials can mean a lot more than they do elsewhere. And that's undoubtedly why presidential campaigns are moving to lock up local support in Nevada: First, get some big-name surrogates on board. Second, create an aura of momentum.

Ever helpful, SlashPolitics has been trying to keep track of all these endorsements. This is just a preliminary list; it will be updated from time to time as new endorsements are announced.

U.S. Sen. Marco Rubio, R-Fla.: Rubio has the most endorsements of any other candidate so far, and has been slowly dribbling out announcements on Twitter. Yes, some are silly (former TV journalist turned drone video pitchman Ron Futrell, for example) but others are serious. Here's a partial list:

• Lt. Gov. Mark Hutchison

• State Sen. Patricia Farley, R-Las Vegas

• Assemblyman Erv Nelson, R-Las Vegas

• Former Lt Gov. Lorraine Hunt-Bono

• Former gaming executive Tony Alamo, Sr. (full disclosure: Alamo's son, Dr. Tony Alamo, Jr., is my doctor)

• Keystone Corp. Chairman John Gibson

• Former state Sen.-turned-lobbyist Warren Hardy

• Community booster Nancy Houssels

• The Gun Store owner Bob Irwin

• Mesquite City Attorney Bob Sweetin

Former Secretary of State Hillary Clinton, the Democratic front-runner, is No. 2 in Nevada endorsement-collecting, with several top names on her list so far:

• Rep. Dina Titus

• State Senate Minority Leader Aaron Ford, D-Las Vegas

• State Sen. Pat Spearman, D-North Las Vegas

• State Sen. Ruben Kihuen, D-Las Vegas

• Assemblyman Nelson Araujo, D-Las Vegas

• Clark County Commissioner Chris Giunchigliani

• Washoe County Commissioner Kitty Jung

• Former Gov. Bob Miller (the last Democratic governor the state has seen, Miller left office in 1999)

• Former Secretary of State Ross Miller

• Former Rep. Jim Bilbray

• Former Rep.-turned-med-school-provost Shelley Berkley

• Former Clark County Commissioner Rory Reid

• Former state Treasurer Kate Marshall

By the way, Clinton's chief rival for the presidency, independent Vermont Sen. Bernie Sanders, has the backing of state Sen. Tick Segerblom, D-Las Vegas.

Not to be outdone, former Florida Gov. Jeb Bush has collected some high-profile names as well:

• Rep. Mark Amodei

• State Sen. Greg Brower, R-Reno

• Assemblyman Lynn Stewart, R-Henderson

• Assemblyman Pat Hickey, R-Reno

• Las Vegas Councilman Stavros Anthony

• Former first lady Dema Guinn, widow of the late Gov. Kenny Guinn

Other state officials have lent their presence to political events, if not their actual endorsements. Two state lawmakers, Assembly members Shelley Shelton and John Moore, both R-Las Vegas, were on hand to introduce U.S. Sen. Rand Paul, R-Ky. at a Las Vegas rally June 29. And Attorney General Adam Laxalt was on hand to introduce Wisconsin Gov. Scott Walker at a rally at a Harley Davidson dealership earlier this month, but Laxalt has not formally endorsed Walker.

However, state Controller Ron Knecht and his top aide, Geoff Lawrence, have endorsed Walker, writing in a Facebook post on July 15 that Wisconsin governor took on public-employee unions and cut taxes.

Another list is that of the political figures who haven't endorsed, at least not yet. Gov. Brian Sandoval is keeping his powder dry so far. (In 2012, he endorsed Texas Gov. Rick Perry, mostly out of loyalty and friendship forged on the Republican Governors Association. Perry's campaign fell flat, but that hasn't stopped him from running again this year.)

Senate Majority Leader Harry Reid is known to be a big fan of Clinton, but has yet to endorse anyone. He's not waiting for the Sanders Surge to subside, however. Last week, he told a reporter, "I am somewhat modest in my – not on everything – but I think my endorsement doesn't mean a lot now, hopefully it will mean a little bit later. And I've chosen not to endorse her right now, so that's the way it is. Everyone knows what a fan I am of her and her husband. And I'm sure at the right time I'll make the right decision."

And two of the most-sought endorsements (because they come from people with very deep pockets) are still up for grabs: casino moguls Steve Wynn and Sheldon Adelson. Neither man has backed a candidate, although Wynn has dined with Clinton and Adelson hosted several would-be candidates for the Republican Jewish Coalition spring meeting at the Venetian hotel-casino.