Washington Post home page external content:

    app.launchdarkly.com
    cdn.brandmetrics.com
    chrt.fm
    clientstream.launchdarkly.com
    events.launchdarkly.com
    fastlane.rubiconproject.com
    fonts.gstatic.com
    g.3gl.net
    grid.bidswitch.net
    hbopenbid.pubmatic.com
    htlb.casalemedia.com
    ib.adnxs.com
    metrics.zeustechnology.com
    pixel.adsafeprotected.com
    podcast.washpostpodcasts.com
    podtrac.com
    redirect.washpostpodcasts.com
    rtb.openx.net
    scripts.webcontentassessor.com
    s.go-mpulse.net
    tlx.3lift.com
    wapo.zeustechnology.com
    www.google.com
    www.gstatic.com

Fox News home page external content:

    3p-geo.yahoo.com
    acdn.adnxs.com
    ads.pubmatic.com
    amp.akamaized.net
    api.foxweather.com
    bat.bing.com
    bidder.criteo.com
    c2shb.pubgw.yahoo.com
    cdn.segment.com
    cdn.taboola.com
    configs.knotch.com
    contributor.google.com
    dpm.demdex.net
    eb2.3lift.com
    eus.rubiconproject.com
    fastlane.rubiconproject.com
    foxnewsplayer-a.akamaihd.net
    frontdoor.knotch.it
    fundingchoicesmessages.google.com
    global.ketchcdn.com
    grid.bidswitch.net
    hbopenbid.pubmatic.com
    htlb.casalemedia.com
    ib.adnxs.com
    js.appboycdn.com
    js-sec.indexww.com
    link.h-cdn.com
    pagead2.googlesyndication.com
    perr.h-cdn.com
    pix.pub
    player.h-cdn.com
    prod.fennec.atp.fox
    prod.idgraph.dt.fox
    prod.pyxis.atp.fox
    rtb.openx.net
    secure-us.imrworldwide.com
    static.chartbeat.com
    static.criteo.net
    s.yimg.com
    sync.springserve.com
    tlx.3lift.com
    u.openx.net
    webcontentassessor.global.ssl.fastly.net
    www.foxbusiness.com
    www.googletagmanager.com
    www.knotch-cdn.com
    zagent20.h-cdn.com

So there's your target list for attacking voters.