On September 4, the political advertising window opened on Philadelphia television and radio stations.  This is a 60 day period leading up to a general election when broadcast stations licensed by the Federal Communication Commission are obligated to offer candidates for national office the opportunity to buy commercials at the lowest unit rate (LUR).

For example, if a high-frequency advertiser like McDonald's earns the lowest rates on a particular Philadelphia radio station during morning drive-time, then any candidate for federal office must, during the 60-day political window, be offered the same rate for morning drive time on that station, regardless of frequency.

If, however, the McDonald's rate is contingent on the radio station's ability to pre-empt commercials without notice, then qualified candidates must agree to identical terms to receive the same rate.

To facilitate the purchase of commercials on Philadelphia radio, stations will supply candidates with a political rate-card.  This card will show the LUR by time of day and by preemption parameters.

Here are other important facts about political advertising on Philadelphia radio.

Delaware Valley small business owners have depended on radio advertising to market their goods and services since 1922.  That's the year three local retailers each put a Philadelphia radio station on the air.  These included John Wanamaker's WOO, Strawbridge & Clothier's WFI, and Gimbel Brothers' WIP.

Today, there are 59 radio stations that serve Philadelphia and the Delaware Valley. Each provides a unique blend of music, information, and entertainment.  Some stations focus on politics or sports. Some play country music. Some play the hits. Some play classic rock. Some are on the AM dial. Some are on FM.

When WOO, WFI, and WIP began broadcasting, there were no TV stations in Philadelphia. Those would come 19 years later. Also, there was no social media, YouTube, Sirius/XM, Pandora, Spotify, or smartphones. Each of those would be products of a new Millenium.

With an overabundance of advertising options now available to small business owners, does advertising on Philadelphia radio still make sense?  Here are five facts that serve to answer that question.

Advertising is critical to the success of every Delaware Valley small business owner.  One of the most powerful elements of any advertising campaign is how many people it reaches.

Nielsen, the world's largest consumer insights company, found that advertising reach has a more significant effect on sales than branding, recency, and context.

There are many ways a local business owner can advertise. This includes traditional media like Philadelphia radio, local TV, and newspaper. It also includes online advertising options such as Facebook, Instagram, and Pandora.

They type of customer an individual business needs to reach depends on the goods and services the company sells. For instance, a daycare operator might want to reach households with young children. On the other hand, a real estate agent could be looking for consumers in the market to purchase a new home.

Every vote counts.  Many times the difference between winning an election and losing is a handful of ballots. This is true in races for almost every elected office, referendum, and issue on the national, statewide, and local level.

To win a modern election requires advertising. Successful advertising requires reach. In the Delaware Valley, the most potent way to reach voters is on local radio.

Last week, for instance, 91.7% of all registered voters in the counties of Bucks, PA; Chester, PA; Delaware, PA; Montgomery, PA; Philadelphia, PA; Burlington, NJ; Camden, NJ;  and Gloucester, NJ. tuned-in to a Philadelphia radio station.  This is significantly more than were reached by local TV, local newspaper, or the major social media site like Facebook and Instagram.

Delaware Valley small business owners have  depended on radio advertising to market their goods and services since the first Philadelphia stations began broadcasting in 1922. 

As a matter of fact, the earliest area radio stations were owned by local retailers including Gimbel's, Wanamaker's, Lit Brothers, and Strawbridge & Clothier.

Today, thousands of small business owners still invest in radio advertising. Not only because it's the only local medium that can reach 3,830,493 consumers every week, but, most importantly, because it works.

Meet five of the of local business owners who advertise on Philadelphia radio to capture a significant share of the $93 billion Delaware Valley consumers will spend this year.

Next year, according to Nielsen, 154,702 people in the Delaware Valley will be getting married.  Assuming that those folks are hitching-up with each other, that means there will be 77,351 weddings. 

CostOfWedding.com reports that the average cost for these pending nuptials will be $30,684 including (but not limited to) rings, dresses, tuxedos, flowers, venues, photographers, invitations, limos, and rice (or birdseed for the ecologically inclined).

This means small business owners in the Philadelphia area who cater to the bridal market will be competing for a share of $2.4 billion.

Mark Twain has some script writing advice for Delaware Valley small business owners who depend on radio advertising to market their goods and services.

"The difference between the almost right word and the right word is really a large matter - 'tis the difference between the lightning-bug and the lightning," advises Mr. Twain.

In other words, fill your commercials with lightning, not bugs!

Currently, according to the Oxford English Dictionary, there are 171,476 words in the English language. A handful of these words, small business owners can't use in their commercials on Philadelphia radio. The Supreme Court of the United States says so.

Of all the words that can be used in broadcast advertising, however, there is one word that should be shunned: 'get' and all of its nasty derivative forms including 'got' and 'gotten'.  Here's why.

"I wish I had known about radio advertising when we opened up our first store in 1998," says the Dan DiZio the co-founder and CEO of Philly Pretzel Factory. "It would have allowed us to grow even faster than we did."

With permission of his Mom, an 11-year old Mr. DiZio began selling pretzels on the treacherous intersection of Roosevelt Boulevard and Rhawn Street in Northeast Philadelphia. His inventory was remnants from his neighbor, who owned the Kensington Soft Pretzel bakery.

"On the first day I sold 1000 pretzels", recalls Mr. Dizio. "After splitting the profits with my neighbor, I had $100 left in my pocket. A lot of money for an 11-year-old."

Shortly after that, Mr. DiZio began recruiting 40-50 classmates a day to hawk even more pretzels on street corners all over the neighborhood.  This early taste of franchising kept his pockets very full through middle school, high school, and into college.

This was the origin of what, today, is a $50,000,000 a year business with 175 stores in 17 states. Eighty-five of those locations are within 40 miles of Center City Philadelphia. Mr. DiZio has gone from selling 1000 pretzels per day to 175,000,000 per year.

Delaware Valley consumers will spend $98 billion on goods and services over the next year. To claim a significant portion of those expenditures, small business owners need to be at the top of customers' minds when it comes time to buy.

The first radio station in Philadelphia signed on the air 1922.  Since then, thousands of business owners have known, intuitively, that advertising on the medium was a potent way to be remembered when a purchase was imminent. 

As a matter of fact, some of the first Philadelphia radio stations were owned by the Delaware Valley's largest retailers including Gimbel's, and Wanamaker's, 

Today, area business owners no longer need to base their advertising plans on intuition.  Now, there is proof that advertising on Philadelphia radio creates the top of mind awareness necessary to drive sales.

Two things are remarkable about voting day in 1920.  It was the first time, ever, women could participate in the selection of the U.S. President. It was also the first time live election results were broadcast on the radio. Not to mention, it was also the first radio broadcast, ever.

The voters' choice that night was between Warren G. Harding  and James M. Cox.  Both men had derived their political power as successful newspaper publishers.  It is quite ironic, then, that one of these men would reach the highest office in the land on the same night that the nascent radio broadcasting business began its takedown of the newspaper industry.

Nowhere is this takedown more apparent than locally, where radio has become, by far, the advertising medium with the largest reach among Delaware Valley consumers.