Story highlights Hillary Clinton and Elizabeth Warren will campaign together in Cincinnati, Ohio

Warren is one of several possible contenders to Clinton's running mate

Raleigh, North Carolina (CNN) Hillary Clinton invited Elizabeth Warren to join her at a rally Monday in Cincinnati, Ohio, a trip marking the first time the two will appear together on the campaign trail.

The event, which will be Clinton's third trip to Ohio in two weeks, is sure to stoke the speculation that the Massachusetts senator could be the former secretary of state's vice presidential pick.

The two Democratic leaders, a campaign release said, "will discuss their shared commitment to building an America that is stronger together and an economy that works for everyone, not just those at the top."

Clinton and her top aides are currently narrowing her choices for a running mate, intently focusing on a handful of potential candidates as her team closes in on the final weeks of vetting before she makes a decision in less than a month, according to several Democrats with knowledge of the decision.

The visit to Ohio offers a chance for Clinton to take a better measure of Warren. While they don't have a longstanding or particularly warm relationship, they do share an intense dislike for Donald Trump and that is sure to be on display Monday.

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