PHOENIX (3TV/CBS 5) -- Arizona Senate candidate Mark Kelly gave three different answers to the media on Friday about whether he would endorse the eventual presidential nominee for his party.

Kelly told Arizona's Family that he was waiting to see who won the nomination before endorsing while also raising concerns about one of the Democratic front runners, Sen. Bernie Sanders from Vermont.

[WATCH: AZ senate candidate Mark Kelly gave 3 different answers on endorsement]

"I'm a capitalist," Kelly said Friday when asked if he could throw his support behind a candidate who describes himself as a Democratic Socialist.

In a separate interview with a local newspaper, Kelly said he will "ultimately support who the nominee is of the Democratic Party. That's clear."

When asked to explain the difference between the two comments, a spokesman for the campaign then gave what amounted to a third answer, saying it is Kelly's "intention" to support the Democratic nominee.

[WATCH: AZ Senate candidate Mark Kelly stops by]

Kelly had not answered questions about his presidential endorsements until today. As a Democrat, Kelly is trying to cut a path to victory in a state where Republicans still hold a commanding lead in terms of registered voters.

Some of the remaining Democratic candidates left in the primary have taken positions on healthcare and immigration that are unpopular with GOP voters. Kelly will likely face Republican Sen. Martha McSally in the general election. She is already attacking him on television with ads that accuse him of being too liberal for the state.

[RELATED: Mark Kelly vows to go on with gun control effort]

The race will be one of the highest-profile Senate races in the country as well as one of the most expensive. Kelly has raised about $20.2 million to wage his campaign, more than any other candidate in the country running for the Senate. Meanwhile, McSally trails in the money chase, having raised about $12.2 million.


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