Arizona Democrat Ruben Gallego gets ad spending from Latino PAC as he cements lead over Kari Lake

Democratic Rep. Ruben Gallego is getting significant backing as he seeks to continue cementing his lead over his opponent in the Arizona Senate race, Republican Kari Lake.

Concretely, the PAC affiliated with the Congressional Hispanic Caucus, CHC BOLD PAC, is investing $1.1 million in ads targeting Latinas across the state. Titled "Las Jefas" (The bosses). It is the biggest spend in the group's history, according to NBC News.

"Raised by a single, working mother, Gallego knows who is boss in Arizona. Grandmothers, mothers, sisters. The bosses. And in the Senate he will fight for them," says a narrator in the ad.

Gallego likely expects the ad to help him consolidate his lead over Lake in the state, with some of the latest polls show him with in a commanding position. The latest survey, conducted by Fox News and published on Wednesday, shows Gallego with a resounding, 15-point lead, 56% to 41%. It was conducted with one Republican and one Democratic polling firm and had 1,014 respondents with a 3% margin of error.

The poll adds to a growing body of literature showing Gallego with a lead ahead of the elections. It is the largest gap between the two candidates, according to the surveys aggregated by FiveThirtyEight. Another recent one, released by Emerson College, has Gallego with a seven-point lead, 49% to 42%.

However, more recent studies have depicted a smaller margin, with a study by CNN/SSRS among 682 likely voters showing Gallego with 47% of the support compared to Lake's 44%. Another one by InsiderAdvantage has the Democrat with a 4-point advantage, 49% to 45%.

Lake has rejected the polling, recently telling NewsNation that she is actually ahead in her "internal polling" and that studies showing Gallego with large leads are "absurd" and "partisan."

"There were a couple of really bad outlier polls that were included and were just absolutely absurd, partisan polls. I know what my internal polling looks like," she said during a passage of the interview. She added that hers is the "third-best chance for a pickup seat in these closely contested races." "And I feel we're going to win this one."