Prepare to nerd out.

The University of Minnesota's Smart Politics blog notes that if Joe Sestak were to beat Pat Toomey in the 2016 US Senate race (reversing his 2010 defeat), it would be the first time in Pa politics that a major party candidate won a rematch.

As Warner Wolf said, let's go to the videotape:

Pennsylvania has held 38 U.S. Senate special and general elections since its first popular vote contest for the office in 1914.

Not once has a defeated major party candidate sought and earned a general election rematch against the victor across these last 100 years.

. . . It should be noted a handful of minor third party candidates have run in multiple elections against the same opponent, though they are not top-billed 'rematches' per se:

· In 1922 and 1928 Socialist William Van Essen ran against Republican David Reed, winning 5.6 and 0.8 percent respectively.

· In 1930 (special election) and 1932, Van Essen won 1.3 percent and 3.3 percent against Republican James Davis.

· In 1944 and 1950, Socialist Labor candidate Frank Knotek won 0.05 percent and 0.04 percent of the vote against Democrat Francis Myers (who lost his '50 reelection bid to Republican Jim Duff).

· In 1946, Knotek won 0.4 percent as a Socialist Laborite in a race won by Republican Edward Martin and then won 0.04 percent against Martin in 1952 under the Industrial Government banner.

· In 1958, Socialist Labor candidate George Taylor carried 0.3 percent of the vote as Republican Hugh Scott won his first of three terms. Taylor won 0.1 percent six years later against Scott in 1964.

Good morning.

1. Here's a new one: A mayoral candidate (in this case Jack Wagner) questioning the claims in a political ad. His own.

2. More weirdness: No, there is not language at a local college (like many others) barring students from openly carrying guns. Yes, that's a change from recent language. But that's all the State System will say about the matter.

3. Senate hearings continue on liquor privatization, a top priority of the Corbett administration. But a top Senator says he doesn't support a House-approved bill or the version proposed by the governor, and instead will introduce his own. 

4. City Council's budget chair, Ricky Burgess, wants to use RAD funds coming free in 2015 to reduce property taxes of those who's home values went up after reassessments. P-G commenters say he should reduce taxes for everybody, not just those who had the misfortune of seeing their homes get valued more correctly. Council has been arguing over the funds for a looooong time.

5. Looks like the first must-see movie of the year is this one, with comparisons to "Annie Hall" and "Manhattan," and a long look at the director in The New Yorker.

Is BrabenderCox -- the Republican media firm for Rick Santorum, Tom Corbett and Tim Murphy -- producing Democrat Luke Ravenstahl's attack ads on foe Bill Peduto? It sure looks like it.

The fuzzy image above of a worried senior (who's maybe wondering in what world Boston is "exotic") is from the latest ad from Ravenstahl's "Committee for a Better Pittsburgh" in the city mayor's race. Little is known publicly about the PAC, other than Ravenstahl's stagnant reelection committee is funding it. (It looks like the PAC didn't have to file financial docs Friday like everybody else because it is not representing -- or giving directly to -- a candidate on the May 21 ballot. Ravenstahl stopped being a candidate March 1.) The treasurer for Ravenstahl's PAC, John Morgan, a public employee on the Pittsburgh Water & Sewer Authority payroll, hasn't been returning phone messages either.

But somebody is producing the ads. One clue that is the firm placing the media buys also did them for the SuperPAC behind Santorum's presidential run last year. (Brabender is a close Santorum advisor as well as media/advertising guy.) But there's another, better one:

The woman in the footage above is also in a spot BrabenderCox did in October 2012 in Murphy's congressional campaign against Democratic challenger Larry Maggi. Her clothes, pictures, vase, everything, are the same. Murphy's October FEC report lists the Pittsburgh company as its media firm too. It's stock footage, yes, but what are the chances that two different firms would pick the same footage just months apart and in the same media market? (Brabender hasn't returned phone messages.)

The attacks in the latest Ravenstahl spot, by the way, are spurring jokes among Peduto supporters on Twitter (using #wagnerstahlattacks) on other attack pitches passed over in the commercial:

Sorry to miss you this morning, folks. Accept this humble brunch burger instead.

1. Hot off the presses: Mayor Luke Ravenstahl's lawyer says he's turned over the contract between Ravenstahl and a city contractor to authorities. As you'll recall, Ravenstahl recently hired the contractor to make renovations to his house.

2. Peduto and Wagner jab over the issue du jour: Peduto's 2006 vote against granting city help to PNC in building the $169.5 million Three PNC Plaza.

3. A Pittsburgh councilman wants to give tax rebates to folks whose property taxes increased in the 2012 reassessment.

4. From our reprint of a LAT story: The Justice Department apparently secretly subpoenaed phone records for nearly two dozen Associated Press lines, both in the wire service's headquarters and elsewhere.

5. Just for fun, that viral clip of a husband and wife singing their hearts out on a Jay Leno candid camera bit? Could be fake.