Cruz 's unexpectedly large victory in Wisconsin was widely seen as a turning point for the Donald Trump campaign , making it less likely for Trump to win an outright majority of all national delegates , even if he should win a plurality of delegates . Without an outright majority in the 2016 Republican National Convention 's first ballot , the delegates won by Trump would be able to switch to Cruz or another candidate in subsequent ballots , as they were pledged to support him only in the first ballot . Given the Republican establishment 's pressure not to nominate Trump , many commentators expected Cruz to be better positioned in subsequent ballots . The theory of Trump 's demise proved to be false . As the primary schedule moved to the Northeast , including his home state of New York , Trump increased his margin of victory and won almost all of the delegates . Finally , with his victory in the Indiana primary , Trump became the presumptive nominee
2016 Republican National Convention
2016 Republican National Convention
2016 Wisconsin Republican primary