Washington (CNN) The battle over a US Senate seat in Texas continues to heat up after a statewide poll released Wednesday shows Democratic candidate Beto O'Rourke just 4 points behind Republican incumbent Sen. Ted Cruz.

If O'Rourke were to pull off a victory, he would be the first Democrat to win a statewide seat in Texas since 1994, in a race that CNN has labeled as "Likely Republican."

According to the poll, Latinos make up 20% of the registered voters in the sample, and they favor O'Rourke with 53% support, while only 42% support Cruz.

The Texas poll was just one of several released on Wednesday, with eyes on races across the country ahead of a contentious midterm season where Republicans are in jeopardy of losing their congressional majority.

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