PHILADELPHIA (TheStreet) -- The gig economy is booming at the Democratic National Convention in Philadelphia this week, just as it was at the Republican National Convention in Cleveland last week.

It's no secret conventions are seen as big opportunities for businesses in the cities that host them. But they also pose a way for gig and sharing economy companies -- and the individuals who take part in them -- to make an extra buck.

Uber is hitting the pavement hard in Philadelphia. The San Francisco-based ride-hailing app is an official transportation partner at the DNC and has a tent set up within the Wells Fargo Center perimeter.

A spokeswoman for the company said that since Monday, Uber has seen a record-breaking number of trips completed and more drivers on the road in Philadelphia than ever before. Compared to last week, demand for Uber rides is up 60%.

All of this has not been without some hiccups -- the logistics of Uber drivers getting to and from the convention arena has needed some panning out, as the first night of the convention was plagued by traffic jams and confusion. Some took to Twitter to complain. Uber has upped staffing and set up an overflow lot to help.

Uber was also present at the GOP convention. And although there it was not an official partner, last week was Uber's biggest week for business in Cleveland ever. It brought in drivers from outside the city as well -- something it did to a lesser extent in Philadelphia.

"Events like this allow Uber to celebrate the cities we serve, highlight some of the great people who utilize the Uber platform and help provide extra economic opportunities for drivers."

One Cleveland driver said he made the same amount of money in five days he normally would have in a month.

Competitor Lyft's presence has been more subtle but still substantial. On the streets of both Cleveland and Philadelphia, the company has been handing out cards for free and discounted rides. It has upped its supply of cars in each city as well.

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Lyft has also teamed up with politics news outlet Politico to be its official transportation provider and with GM (GM) - Get Report to produce editorial videos showing behind-the-scenes action at the conventions. A spokesman for Lyft said Uber's big presence, especially at the DNC, has not impacted business.

With the influx of convention attendees, room-rental site Airbnb has seen a spike in business as well. Ahead of the events, Airbnb projected over 1,900 guest arrivals in Cleveland, four times more than in surrounding weeks. And in Philadelphia, it anticipated more than 5,200 arrivals, more than 2.5 times the normal.

The median nightly price in Cleveland was $300, with hosts making about $1,500 during the event. In Philadelphia, the median price is about $100, meaning $850 in total earnings for hosts. And prices spiked as well -- a one-bedroom apartment in Cleveland generally priced at $70 a night instead went for $250.

Gig economy companies aren't just using the conventions to make money -- they're using them to influence politicians as well.

Airbnb and Uber hosted a panel in Philadelphia Tuesday morning, reports Bloomberg, reminding Democrats that their popularity comes with both political opportunities and risks. Airbnb released a survey showing that a vast majority of millennials have a favorable impression of the sharing economy.

The poll also found millennials support Airbnb operating in their areas legally -- emphasizing those living in swing states.

"If you're a candidate whether running for president or really any other office, to quote-unquote 'speak millennial,' you ought to be talking about the sharing economy, because it is core and central to their economic future," said Chris Lehane, head of policy and public affairs at Airbnb and a former aide to President Bill Clinton, at the event.

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