HOUSTON — Donald Trump stares at Mary Moreno every day from across her office at the Texas Organizing Project, a group working to turn out black and Latino voters in a state ranked almost dead last in voter participation.

Moreno was looking forward to smashing the child-sized Trump pinata at the end of the 2016 campaign — but then Trump won and spoiled her plans. So there he stands, fully intact, a silent reminder to her and the dozens of paid canvassers who are dispatched from here every day to do the sweaty, grinding work of going door-to-door to cajole people to get out and vote on Nov. 6.

Even with phenom Senate candidate Beto O’Rourke at the top of the Texas ticket, it hasn't been easy, as Democratic officials, party operatives and tied-in organizations in this state and across the country are seeing signs — surprising to some — that many Hispanics may sit out the midterms. The lack of enthusiasm among Latinos has party leaders concerned that a key part of the coalition needed to take back the House and Senate may stay home.

"People are angry, but it doesn't necessarily make them want to vote," said Moreno. "They're like, Why even bother voting if people like Trump are going to win?"

A Donald Trump pinata stands in the corner of communications director Mary Moreno's office at the TOP offices in Houston. Loren Elliott / for NBC News

"There's a mountain of evidence showing Latino voters are a weak point for Democrats this cycle," said David Wasserman, House editor for The Cook Political Report and an NBC News contributor/senior analyst with the NBC Election Unit.

A national problem

More than three years after Trump launched his presidential campaign by railing against Mexican "rapists" streaming over the border, Democratic hopes and Republican fears that the growing population of Latinos would give Democrats a permanent advantage have yet to materialize.

Nationally, Latino voters favor a Democratic Congress over a Republican one by 64-21 percent, according to an NBC News/Wall Street Journal Telemundo poll last month. But self-reported interest in the election is low, according to the same survey, and the picture in some individual races looks even worse for Democrats.

On paper, some of congressional Democrats' best opportunities to pick up seats come from heavily Hispanic districts that are currently held by Republicans, but which Hillary Clinton won in 2016. Yet those are also some of the places where recent polls are showing Democratic candidates not doing as well as anticipated.

In Miami, Democrats risk blowing what was once seen as a sure-thing after they nominated former Bill Clinton Cabinet secretary Donna Shalala, who doesn't speak Spanish. Next door, GOP Rep. Carlos Curbelo is neck-and-neck with a Democratic challenger in a 70 percent Latino district that Clinton won by 16 percentage points.

In Nevada, incumbent Republican Sen. Dean Heller has been able to cling to a narrow lead by keeping a healthy 38 percent of Latino voters in his camp, according to a recent NBC News/Marist poll. And in the Las Vegas suburbs, handicappers just downgraded Democrats' prospects of holding onto the majority non-white 4th Congressional District.

Not far away in California, where Democrats are well-positioned to overcome 80 years of Republican dominance in the wealthy suburbs of Orange County, two GOP incumbents, Reps. Jeff Denham and David Valadao, look relatively strong in heavily Hispanic parts of the Central Valley.

And in Arizona, Democrat David Garcia's campaign to become the state’s first Latino governor has struggled to gain traction, even though Clinton came closer to winning that state in 2016 than any Democrat in years.

But nowhere is the Latino challenge this year more evident than Texas.

O'Rourke, who is of Irish descent but adopted a Hispanic nickname, needs strong backing from Latinos to win against Cruz in the heavily Republican state. Cruz, whose father was born in Cuba, is earning the support of almost four-in-10 Latino voters, according to a Quinnipiac poll.

"The problem with Texas for Democrats is not that it's a red state, it's that it's a non-voting state," Julian Castro, the former Housing and Urban Development Secretary and ex-mayor of San Antonio, told NBC News. "The issue we have is with ourselves — it's getting more people registered to vote, it's getting the Hispanic community to turn out and vote."

Self-inflicted wounds

Democrats and activists working to turn out Latino voters say they face several obstacles, some of them created by the party itself.

And they worry that anger toward Trump, rather than driving votes, is turning people off of politics altogether.

"The more noise there is in Washington, D.C., oftentimes it can be confusing and it can be intimidating to voters," said Dan Sena, who is overseeing an estimated $30 million outreach effort to young and minority voters as executive director of the Democratic Congressional Campaign Committee. "I think there's been an intentional strategy from the White House to do that to communities of color."

Party organizers see potential in messages that emphasize bread-and-butter issues and community empowerment, but getting that to voters and registering new ones requires time, money and attention, all of which are in high demand to court other key voters.

About 55 percent of Latino voters reported that they had not yet been contacted by a campaign or party about registering to vote this year, according to a Latino Decisions survey for the National Association of Latino Elected and Appointed Officials last week.

Hispanic turnout traditionally lags behind other demographic groups, especially in midterm elections, where it dropped to a record low of 27 percent nationally in 2014, compared with 45 percent among whites, according to the Pew Research Center. And recent polls show Latinos less enthused about November than other minorities.

The issue is compounded by the fact that the Latino voting population skews younger than the overall one.

"Age by itself is the single biggest predictor of turnout and no other variable comes close," said Matt Barreto, co-founder of the polling firm Latino Decisions. "But overlaid on that, the reason young people don't vote is because they don't feel the system is responsive to them."

Some Democrats worry this dynamic has created a dangerous cycle of futility: The party needs to engage millions of young Hispanic voters to win tomorrow, but pursuing them means less time spent on voters who are likely to show up and decide elections today.

Castro said he talked with former President Barack Obama repeatedly over the years about turning Texas blue, but doing so would take a sustained investment from deep-pocketed donors over multiple election cycles. "It would take someone stepping out and dedicating a tremendous amount of resources," Castro said.

O'Rourke told NBC News that he's had to defy political consultants and experts who encourage him to focus only on those voters who data show are most likely to turn out next month.

"They say, 'There are so few days left, time and money is so precious, don't spend it on people who traditionally don't vote,'" O'Rourke said. "Our response to that is, I would't vote either if no one ever showed up to where I am, listened to me, included me in what they campaigned on and what they wanted to delivered on."

But Democrats and activists worry that years of neglect may put a ceiling on O’Rourke's potential.

"(Democrats) don't invest in grassroots organization, they don't invest in the year-round work that needs to happen after an election cycle," said Cristina Tzintzun Ramirez, the founder of Jolt, which is trying to organize young Latino voters in the state. "Beto's greatest hurdle is the lack of infrastructure that exists in the Latino community."

Trump is not popular among Hispanic voters, but opposition to him is nowhere near as monolithic as it is with African-Americans.

There are huge regional differences among Latinos that defy simple one-size-fits-all messaging: Democrats need to win Cuban and Puerto Rican voters in Florida and fourth-generation Mexican Americans in Colorado and children of recent immigrants in Texas.

"Whatever is happening nationally, whatever the numbers for Republicans across the country with Latino voters, its always been better in Texas than other places," said Matt Mackowiak, a Republican strategist based in Austin.

Past Republican candidates from George W. Bush to Sen. John Cornyn have won elections with strong performances among Latino voters. GOP Gov. Greg Abbott won 44 percent of Latinos in 2014 and might top that this year in his race against Lupe Valdez, a Latina Democrat and Army veteran.

Among other factors, Mackowiak cited a conservative bent in many Texas Hispanic communities that makes it harder for Democrats, especially progressive ones like O'Rourke, to maximize their margins.

"We're Hispanic, you'd think we would all vote against Trump, but some people in my family say he has some good ideas," said Alicia Rodriguez, a 20-year-old college student who came to an O'Rourke rally last week.

"We're just not good voters"

Meanwhile, activists argue that the party has failed to cultivate many star politicians of Latino descent, making it more difficult for Democrats to communicate with the community.

Of the many Democrats eyeing a potential presidential run in 2020, the only Latinos on most watchlists are Castro and Los Angeles Mayor Eric Garcetti, who identifies as "Mexican-American, Jewish-Italian."

The DCCC tapped Rep. Ben Ray Luján, D-N.M., as its first Hispanic chairman this cycle and the Democratic National Committee is led by Tom Perez, who is of Dominican descent.

The challenge for Democrats is particularly evident here in Houston, a sprawling metropolis whose surrounding county is home to the second largest Latino population in the county, trailing only Los Angeles.

Yet Houston has never had a Latino mayor or member of Congress, even after a House district was redrawn expressly for that purpose. And none of the five members of the Harris County Commissioners Court is Latino.

The Latino timeline