Mitt Romney sweeps, tightens hold on GOP race

Mitt Romney won the most fiercely  fought race, in Wisconsin, where chief rival Rick Santorum was hoping to steal away some of  his momentum with another surprise victory.

M. Spencer Green/Associated Press

Romney swept a trio of Republican primary contests, strengthening his status as the presumptive nominee as the party moves to embrace the former Mass. governor.

Former treasurer Timothy P. Cahill said he did nothing wrong in lottery ads.

Cahill faced fine line on government advertising

With the indictment of former state treasurer Timothy Cahill on charges of misusing state lottery ads in 2010, the question of what constitutes illegal campaigning is up for debate.

Demand for kindergarten seats on rise in Boston schools

The demand in the Boston Public Schools has risen by more than 25 percent, an unanticipated increase that has left hundreds of students without an assigned school.

Needham firm finds success with older workers

Nearly half the employees who produce, package, and ship orders at Vita Needle, a maker of stainless steel needles and tubing, are over 65, with a median age of 73.

Needle maker’s workforce is largely senior citizens

Employing older workers is official company policy at Vita Needle in Needham.

Doctor sues MGH bosses over control of inventions

Dr. Joseph A. Grocela is in a legal fight with Mass. General and its corporate parent, Partners HealthCare System, over who owns the rights to his medical creations.

Website steers drivers to parking spots

The site, ParkatmyHouse.com, lists parking spaces available for rent, spot parking in the Fenway or long-term rentals in other crowded neighborhoods.

Many common procedures unneeded, say doctors groups

Nine medical specialty groups have released a list of 45 tests and procedures that patients often do not need — even though doctors routinely perform them.

Metro

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Couple shares 25-year bond with Omni theater

Joe and Cherie Larson Rivers were the Mugar Omni Theater’s opening night projectionists in 1987. Their relationship, and the Omni, blossomed in ways that no one could anticipate.

Business

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Nation & World

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US offers $10m for Pakistani militant

The US announced a $10 million reward for information leading to Hafiz Mohammad Saeed, a Pakistani militant tied to the 2008 attacks in Mumbai, India.

Politics

President Obama called the House-passed Republican budget thinly disguised social Darwinism.

Obama criticizes GOP budget, calls Romney out

President Obama called the GOP’s budget proposal a radical blueprint that bolsters only the rich, and he leveled criticism at Mitt Romney for the first time in a speech.

Sports

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Penguins 5, Bruins 3

Sidney Crosby of the Penguins took the puck as Daniel Paille of the Bruins gave chase in Pittsburgh’s 5-3 win Tuesday night at TD Garden. Crosby had two goals and one assist in the game.

Crosby leads Penguins past Bruins

Sidney Crosby had two goals and one assist as the Penguins defeated the Bruins, who clinched the Northeast Division title Sunday and are 7-2-1 in their past 10 games.