GOP presidential nominee Donald Trump has repeatedly attacked Speaker of the House Paul Ryan in the media, alleging he isn’t supportive enough and “doesn’t know how to win.” But what Trump has failed to acknowledge, Ryan’s allies maintain, is how the Wisconsin Republican’s efforts to keep the majority directly benefit the GOP campaign.

Ryan has played a pivotal role in putting the Badger State in play, having helped raise a whopping $1 million for the state’s party after transferring $250,000 to the group in late October. The funds — which are available to all Republicans, including Trump, running in Wisconsin — are being utilized to build one of the strongest ground games in the country.

In August,…