Democratic campaigns are out-performing their GOP counterparts among Latino voters by a 3-to-1 margin, according to a new multi-week tracking poll.

Sixty-three percent of registered Latino voters surveyed said they had been contacted by Democratic campaigns, according to a NALEO Educational Fund/Noticias Telemundo/Latino Decisions poll released Thursday, while 19 percent said they'd heard from Republicans.

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Overall, 42 percent of registered Latino voters said that a political campaign asked them to register or vote, according to the survey, which concluded its fourth week of polling on Saturday.

Democrats have consistently reached more Latino voters than Republicans, according to the poll, but the margin of Democratic advantage has increased significantly over the past month.

Democrats held a 2-to-1 lead over Republicans in the first two weeks of polling, ending Sept 26. During those weeks, Democrats reached about half of respondents, while Republicans reached about a quarter.

Overall, the number of those who said Democrats had contacted them increased 12 points in the past month, from 51 to 63 percent, while the number of those who said Republicans had contacted them dropped 5 points, from 24 to 19 percent.

Adrian D. Pantoja, an analyst with Latino Decisions, wrote that outreach to 40 percent of the voting bloc implies wide reach by campaigns.

"At first glance that may seem low, but it is important to keep in mind that this is a national poll, and a significant portion of Latinos reside in non-battleground states," wrote Pantoja.

Latino voter participation has traditionally been low among eligible voters — about 40 percent in 2012 — but more reliable among registered voters.

"The question in every election is whether Latinos will turn out to vote," wrote Pantoja, who directed the poll.

Hispanic activists and Democrats have focused their Latino outreach on voter registration, rather than traditional advertising, in an effort to mobilize the bloc.

The focus on getting out the vote reflects Democratic confidence that Latino voters will overwhelmingly vote for presidential nominee Hillary Clinton Hillary Diane Rodham ClintonButtigieg stands in as Pence for Harris's debate practice Senate GOP sees early Supreme Court vote as political booster shot Poll: 51 percent of voters want to abolish the electoral college MORE over GOP nominee Donald Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE.

Latino Decisions' poll found that 74 percent of respondents are either leaning toward or are sure they will vote for Clinton, while only 16 percent support Trump.

The poll found that 78 percent of eligible Latino voters say they are "almost certain" they will vote, a jump from the previous week, when only 71 percent said the same. A poll released Tuesday by the Pew Research Center said only 69 percent of Latino registered voters were "absolutely certain" they will vote.

The Latino Decisions survey polled 250 registered Latino voters who were randomly selected from online panels. It was conducted Oct. 2–8 and has an overall credibility interval of 4.4 percentage points.