Walker has stated that a vote for anyone other than presumptive party presidential nominee Donald Trump is a "de facto vote" for Hillary Clinton....."I think there is a clear contrast," said Gov. Walker. "For those who raise concerns like I just did about the judgment of Hillary Clinton in terms of not just those emails, but some of the other issues out there, really there's only one alternative."
Walker indicated the Clinton email scandal would be a focus of his speech..."If someone doesn't cast a vote for the Republican nominee, they are effectively casting a vote for her and that's 'part' of what I'd be willing to talk about," said Gov. Walker.
Walker acknowledged he is rejecting the idea that Trump could still be replaced as the GOP nominee.
Gov. Walker...... "From the delegates I've talked to here in Wisconsin, as well as those across the country, as much as there have been legitimate issues raised and concerns - the bottom line is most delegates are headed down the path that I am, which is that it's a clear contrast. It's either gonna be Hillary Clinton or it's gonna be Donald Trump and we have to decide who we want it to be."
http://www.wkow.com/story/32374882/2016/07/05/gov-scott-walker-will-speak-at-republican-national-convention