Democrats continue to significantly outspend Republicans in TV advertising for the Presidential election -- 58% more in media spend, according to AdImpact.

Since late July (through October 9), Democrats -- including Democratic groups -- have spent $1.1 billion on advertising that has aired or have reserved future advertising. Republicans are at $700 million.

Looking at the expanded time frame between March 5 (Super Tuesday) and October 9, this ad-pacing spend tracks mostly at the same level, with Democrats at $1.3 billion compared to Republicans at $768 million.

Total Presidential election spending so far is at $2.1 billion -- with 74% of that spend going to key swing states -- Arizona, Georgia, Michigan, North Carolina, Nevada, Pennsylvania, and Wisconsin.

Since Harris entered the race on July 21, this climbed to 79% of total ad spend. These states are currently set to receive 88% of overall future spending.

Looking at specific party and candidate activities, Vice President Kamala Harris and Democratic groups continue to outpace former President Donald Trump and Republican groups.

The Harris campaign and Democrat groups have spent $456.3 million and $364.1 million, respectively, between July 22 and October 9, compared to the Trump campaign and Republican groups at $204.3 million and $306.1 million, respectively.

For the next 24 days, candidate Trump is currently set to spend slightly more than Harris -- at $60.3 million versus $57.6 million.

But Democrat groups around the Presidential election will almost double the anticipated spend of Republicans -- $208.9 million versus $118.1 million.

Since July 22, Pennsylvania has seen the highest advertising spend -- $159.1 million from the Democrats, vs. $120.2 million from Republicans. The next-highest state is Michigan: $125.6 million (Democrats); $78.1 million (Republicans).

AdImpact has tracked more than 253 unique broadcast political advertisements and 904,000 broadcast airings targeting the Presidential election since Super Tuesday.

This data includes viewing patterns and devices tracked using automated content recognition technology.

Paramount+ and Hulu are not included in streaming estimates.