Good news for the country, and for the hemisphere:
Argentine President’s Coalition Wins Midterm Elections.Mauricio Macri’s Let’s Change group garners broad backing in key provinces, easing his path to new tax cuts and other market-friendly policies.

How about Cristina? Mixed news (emphasis added),

Mr. Macri’s top Senate candidate in Buenos Aires province, Esteban Bullrich, outpolled former president Cristina Kirchner by about 41% to 37%, hindering her hopes of regaining control over the Peronist political movement.

Though Mrs. Kirchner won one of three Senate seats at play in the province, her failure to best Mr. Bullrich will likely embolden her Peronist rivals, many of whom support Mr. Macri and don’t want her to seek the presidency again.

More:

Fernandez’s second-place showing still grants her one of the province’s three Senate seats under Argentina’s list system. One third of the Senate and half of the house were elected, and Macri’s coalition will not have a majority.

As I understand it, this means that, even when she’s not head of the Peronists, she gets immunity from prosecution as long as she is a Senator.