Clinton takes a swipe at Trump in new TV ad campaign
Hillary Clinton has taken aim at Donald Trump's hardline immigration policies as well as violent incidents at some of his rallies in a new television ad campaign set to run in New York.
Democratic hopeful Mrs Clinton claims in the ad that while some people say America's problems can be solved by "building walls" and "banning people based on their religion", New Yorkers know better.
The TV spot shows a clip of a man being punched at a recent Trump rally and briefly flashes a sign from one of the billionaire's new hotels.
New York holds its Democratic and Republican primaries on April 19.
While Mrs Clinton still faces a strong challenge from Democratic rival Bernie Sanders, it is notable that the ad focuses on Mr Trump, the Republican frontrunner and a native New Yorker.
Meanwhile, Wisconsin's April 5 primary looks pivotal in the Republican race. If Mr Cruz wins, it would narrow Donald Trump's already tight path to the nomination and raise the prospect of a contested party convention.
Delegates there might turn to other candidates if the billionaire fails to win on the first ballot.
Mr Trump heads into Wisconsin with 739 delegates to Mr Cruz's 465, while Mr Kasich lags behind with 143.
Wisconsin has 42 Republican delegates, with 18 going to the state-wide winner and 24 divided among the winners in each of the state's eight congressional districts.
Mr Trump told supporters at a rally that "if we win Wisconsin, it's pretty much over," noting his significant delegate lead over both his rivals.
He would need 1,237 delegates by the end of the primary season to capture the nomination and avoid a contested convention.