Democratic voters hold a much more favorable opinion of Sen. John McCain John Sidney McCainMcSally says current Senate should vote on Trump nominee Say what you will about the presidential candidates, as long as it isn't 'They're too old' The electoral reality that the media ignores MORE (R-Ariz.) than Republicans, according to a new poll released days after McCain cast a crucial vote killing a scaled-down ObamaCare repeal measure in the Senate.

Nearly three in four Democrats, 74 percent, hold a favorable opinion of McCain, while only 39 percent of Republican have a favorable view of the GOP senator, according to a Quinnipiac University Poll released Wednesday.

Forty-nine percent of Republicans hold an unfavorable view of the Arizona lawmaker, while 18 percent of Democrats have an unfavorable opinion, according to the poll. Twice as many independents view him positively than negatively, 60 to 28 percent.

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Overall, 57 percent of voters have a favorable view of the senator, while 32 percent hold an unfavorable view.

The poll was conducted July 27 through Aug. 1, mostly after McCain joined two fellow Republican senators in rejecting a pared-down "skinny" ObamaCare repeal bill last Friday.

McCain, who recently returned to the Senate following a brain cancer diagnosis, cast the deciding vote against the bill in the early morning hours of July 28.

The veteran Republican lawmaker has defended his vote, saying Wednesday during a radio interview that the measure would have "screwed" his state.

The survey of 1,125 voters across the country was conducted via cell phones and landlines and has a margin of error of 3.4 percentage points.